How to Upgrade the Firmware of a 2009 Mac Pro 4,1

Written By: Josh Calvetti
  • Comments: 156
How to Upgrade the Firmware of a 2009 Mac Pro 4,1

Difficulty

Easy

Steps

7

Time Required

10 minutes

Introduction

The 2009 Mac Pro shares an identical motherboard with the 2010 model. With a firmware update, you can use newer CPUs and upgrade all the way to 10.14 Mojave with a supported graphics card.

It is important to note that you will need a Mac EFI compatible GPU installed while performing the flash.

If you opted for a GPU upgrade from Apple at any point, you may have a different card. This could include:

• ATI Radeon 4870

• ATI Radeon 5770

• ATI Radeon 5870

Provided these are original Apple or Mac Edition cards, you should be fine to proceed.

  1. ADBWDXMOOenlYOkJ
    ADBWDXMOOenlYOkJ
    4tcXZsy3mdpt6PaM
    4gUoFnvawVNYZJ1O

    • First thing's first: You will want to upgrade to macOS 10.11, which is the latest "officially" supported version of macOS for the 4,1 Mac Pro.

    • Provided you are on at least 10.6.6, you should be able to download the installer from the Mac App Store by following this link

    • If you are on 10.6.5 or earlier, you will need to first upgrade via Software Update to the last release of Snow Leopard (10.6.8) to get access to the Mac App Store.

    • You will need to download two different packages to complete the upgrade:

    • Mac Pro EFI Update

    • Firmware Update Tool (hosted at Netkas in the bottom of the first post)

    Is there another place to download the tool? I can’t seem to connect to Netkas.

    Jacob Osier -

    https://web.archive.org/web/201901232023...

    I found a link for if the forum is down.

    Jacob Osier -

    I had to change the above URL to that to make it work:

    https://web.archive.org/web/201901232023...

    This might work as a direct download too (from the linked forum page):

    http://forum.netkas.org/index.php?action...

    Chris

    Christian Krupa -

    Therefore thisupgrade whant happen with a different card?

    Is there a way to work around it?

    I nolonger have the original

    d1nchiana@gmx.com -

    you just need to have a card with the original EFI from Apple- there’s some other cards around, like the Radeon 4870 for example. It may work with newer “compatible” cards like those from Macvidcards.com, but I’m not sure.

    Josh Calvetti -

    I no longer have the original Apple GPU. Instead, there is an ATI Radeon HD 4870 512 MB installed in my Mac Pro 4,1 (early 2009). I do get the startup and sign-in screens as the system boots. Is it safe to try the 5,1 firmware update?

    Ronald Koontz -

    the Mac Pro EFI update is not working on my MacPro 4,1 2009.

    OSX El Capitan 10.11.6

    error:

    “This software is not supported on your system”

    Who can help me?

    Mark -

    Mark, I have the same issue “This software is not supported on your system”. You found a fix?

    john -

    Mark, just got it sorted and flashed to 5.1. You must 1. put the “MacProEFIUpdate.dmg” on your desk top. 2. Unpack the “MacProEFIUpdate.dmg” by double clicking but DO NOT RUN the “MacProEFIUpdate.pkg”, leave it open on your desktop 3. The MacProEFIUpdate.pkg will be read by the “Mac Pro 2009-2010 Firmware Tool.app” when you run that. 4. Run the “Mac Pro 2009-2010 Firmware Tool.app” and follow the instructions, easy. Good luck.

    john -

    The link to the installer in step 1 is not working.

    Can someone provide an active link!

    G Graff -

    Which installer? macOS or the utility? All the links are still working for me.

    Josh Calvetti -

    Please check your Bootrom for MP41.0081.B08. If you are stuck with this bootrom you will NOT have success upgrading the firmware. There are numerous issues as documented here. It seems like there is a workaround but there is clearly not. Not unless you are willing to pay for a full firmware reconstruction which costs much more these days than other Mac Pros with the correct bootroom to start.

    https://forums.macrumors.com/threads/mac...

    Matt pointvicente -

    The Firmware Update Tool download link doesn't seem to work. Is there an update?

    Matt -

    i could send it to you. just do not know how to do this (safely)

    Gray Greensheim -

    I'm not sure if pigsyn is the original author, but there is a Github here

    https://github.com/pigsyn/MacProFirmware...

    Note that the source code zip appears to be what used to be on netkas

    https://github.com/pigsyn/MacProFirmware...

    dewey -

    I just was able to update my firmware with the link shared from July of 23 and update my '09 Mac Pro tower to Sierra to hopefully play nicer with my Numark NS7ii. Thank you! I love utilizing "obsolete" tech!

    Karl Isaacs -

    • You'll need to disable System Integrity Protection (SIP) in order to flash the new firmware.

    • Restart your Mac Pro and hold cmd+r to boot into the recovery partition on your boot drive.

    • Once in Recovery Mode, go to the Utilities menu at the top of the screen and click Terminal

    • Enter the following command:

    • csrutil disable

    • Hit return and restart your Mac Pro as normal.

    This step only pertains to OS El Capitan and later

    bm_dong -

    What if I’m on Yosemite. Do I need to turn off SIP another way?

    roryoneders -

    Hi

    I got issue i was just trying to do this but the tool give me error

    “the program has encountered an error: 5570

    Sandip Tailor -

    I’m so grateful to have found this information, but it just doesn’t work for me. I get as far as typing csrutil disable then hitting return and I get something like ‘bad command’ or some such. I’ve tried this over and over – same every time.

    If anyone can help. I’d be most grateful. Computer specs below:

    Mac OS 10.7.5 (and desperately keen to upgrade)

    Hardware Overview:

      Model Name: Mac Pro

      Model Identifier: MacPro1,1

      Processor Name: Dual-Core Intel Xeon

      Processor Speed: 2.66 GHz

      Number of Processors: 2

      Total Number of Cores: 4

      L2 Cache (per Processor): 4 MB

      Memory: 8 GB

      Bus Speed: 1.33 GHz

      Boot ROM Version: MP11.005D.B00

      SMC Version (system): 1.7f10

      Serial Number (system): CK7220N1UPZ

      Hardware UUID: 00000000-0000-1000-8000-0017F200F892

    Nick -

    @josh is correct above that it’s a different procedure for your Mac Pro 1,1. Specifically to answer your question—if you’re still wondering, or for anyone else looking at this—System Integrity Protection was introduced in OS X 10.11 El Capitan. The csrutil command is meaningless for earlier versions, hence your “bad command” error. This can be checked without recovery mode by running csrutil status in Terminal.

    Richard Graham -

    Hi Nick,

    Based on your hardware profile, you have the very first Mac Pro, which I believe can be flashed from a 1,1 to a 2,1 - but I have not done that process myself so I am afraid I can’t speak to how it works. I believe this forum thread (also on Netkas) may have the information you need.

    Josh Calvetti -

    Please help me,

    I've got an Mac Pro 4,1 with the first os on it. So I tried to update it. But now after the Apple logo my screen turns black everytime.

    Mark -

    I have a Mac Pro 4,1 running El Capitan. I followed the instruction in Step 2 to disable SIP but at the end, when I reboot the machine, it got stuck at the boot screen (Apple logo and progress bar). The only way out is physically powering down the machine, do a NVRAM reset and only then it can reboot back to El Capitan. But the SIP is enabled again by the NVRAM reset! :-( . I tried a dozen times or so. but no joy. Advice from any one?

    Hal Nguyen -

    Running 10.11.6 on a Mac Pro (Early 2009) and cmd+r does not go into recovery mode. Any tips to disable SIP? I was able to download the two files but if I can’t disable the SIP, I don’t want to waste time moving forward. Thanks in advance!

    Tobias -

    I just ordered a new Backplane Board Mac Pro Early 2009 Not thinking about the firmware update ? Will the Mac Pro run with the 6 cores processors before I can flash the board the board to 5.1 ??? Ho gee wiz. I don’t have the old processors I bought it flashed and upgraded.

    I just hoping I might prepare everything prior to switching the board and then restart holding the power button ? Would that even work ?

    This board works Im typing on it. Its just that it had two voltage sensor that I just count fix is I decided to get a new 4.1 board cheap cheap ?

    This is a 2009 flashed Mac Pro…

    Model Name: Mac Pro

      Model Identifier: MacPro5,1

      Processor Name: 6-Core Intel Xeon

      Processor Speed: 3.33 GHz

      Number of Processors: 2

      Total Number of Cores: 12

      L2 Cache (per Core): 256 KB

      L3 Cache (per Processor): 12 MB

      Memory: 32 GB

      Boot ROM Version: 138.0.0.0.0

      SMC Version (system): 1.39f5

      SMC Version (processor tray): 1.39f5

    Marc Evo -

    I have problems installing El Capitan and tried to flash it with 10.8.5 there is no system integrity protection.. it did not work and was back at the old firmware after restart any tips here? Is a super user required? Maybe this can work on older Mac OS…?

    Dominik luedtke -

    @tobiasfunke, were you able to get into recovery mode using cmd+r? I’m having the same difficulty getting into recovery mode

    Tony -

    @tony NO. Still trying to get it done. I have 3 other drives in the bays so someone suggested to pull the other drives and leave one drive. I have not taken the time to do so thanks to work, life, family, etc.…. Alternatively, I may try to just put a new drive in and have nothing on it but the OS and then try. My issue is that I need to put my think cap on as how to do this.

    It is is very odd and I do not understand why it is so difficult. I am assuming that if I update the firmware, then switching drives back into the system will not matter as the firmware will not reset. I am a techie but not a superstar (in other words, I know enough to be dangerous and can solve matters but am not in the computer field). We will see. If you find a solution, please post and copy me!!! Good luck!!!

    I found a video on YouTube and the owner of the video was responsive and tried to help me thus the removal of the hard drives was suggested. It is here: https://youtu.be/YU8p86qHnek

    Tobias -

    • While the tool was originally designed to pull the firmware directly from Apple's website, a change in the file location and name on Apple's part has made it necessary to download & mount the .dmg prior to running the tool.

    • Double click the firmware file you downloaded in step one to mount the disk image to your desktop.

    • Right click and select "Open" on the firmware update tool. Since it is not signed with the proper certificate, macOS will likely refuse to open it just by double clicking the file. Right click the file and open from the menu to fix this.

    • You should have two options in the window - upgrade to 2010 firmware and downgrade to 2009 firmware. Only one option will be available at any given time, dependent on which firmware you have installed.

    • There is really no reason to ever downgrade to 2009 firmware, as none of those machines are still under any warranty from Apple and the system discs are not as important now that all OS versions are given as software downloads.

    • You are not required to upgrade your CPUs if you update to the 2010 firmware- your original system configuration will continue to operate as it always has.

    • Be sure to read any and all information that the utility may pop up.

    • IF YOU HAVE DIFFICULTY: Try using this alternate tool.

    I just tried this on my 2009 Mac Pro. Everthing seems to go according to plan. The helper utility runs, does it’s thing, then tells me to shutdown. But when I hold the power button to start back up and actually run the firmware update…. nothing happens. That is, it boots normally, no updater. I’ve held the button till if flashes, I’ve held the button till I got the tone. But no matter what, it just boots normally. This machine is running 10.9 btw.

    Any suggestions?

    John M -

    Hi John, I’m not entirely sure - there’s some good discussion in this macrumors thread that may be of assistance. Also feel free to ask a question in the answers forum here- you will likely get some good responses!

    Josh Calvetti -

    Step 2 says to run the firmware tool, but in Step 1 there are TWO firmware tools to download. Which of these do I run?? If both, which one goes first?

    david -

    Hi David,

    In the first step there is a tool for installing the firmware and the firmware itself- if you download just the .dmg on your 4,1 machine, it will refuse to install. You need the .app from Netkas, which is the second link. Download both, open the disk image from Apple, run the tool from the second download and it should auto detect the package on the desktop. Then it’s off to the races!

    Josh Calvetti -

    Gives error 5570 when running the Mac pro 2009-2010 Firmware tool. Even after performing a PRAM reset.

    Hans -

    I got the 5570 error as well, did you find a fix for this?

    david -

    @josh I got the 5570 error message when running the Firmware Update Tool. Is there a fix for this?

    david -

    Colleagues: the patched firmware tool fixed the 5570 error for me. Everything worked correctly, now I have a Mac Pro 2010! :-)

    Important: the EFI Update .dmg should be mounted on the Desktop.

    Marco Andrei Kichalowsky -

    Hi everyone,

    I did a bit of research - it seems like maybe it’s a problem with it looking for the firmware update file that happens to some people. There’s some information and directions on this page, post #964 about half way down the page from user Pigsyn. Give it a shot!

    Josh Calvetti -

    If I have a bunch of software installed and working on the machine I am about to run this firmware upgrade, will it mess up the apps that are already installed?

    spaddison -

    NOT necessary to upgrade to macOS 10.11. I’m running 10.10.5 and the firmware upgrade worked fine. See firefly416 post in level 2 of the following : https://www.reddit.com/r/osx/comments/5l...

    N. Thomas Payne -

    Just acquired a 2009 Mac Pro for free. When I tried to run the Firmware tool as instructed above, I get an error message (after a few seconds), saying “This program requires Internet access. Please connect your Mac Pro to the Internet and try again”, I HAVE internet access (even switched off WiFi and used an Ethernet cable the 3rd & 4th tries). It then quits when I click OK to that error message. Any ideas?

    amiller770 -

    Hello,

    It looks like I have no recovery disk, Then I am unable to run csrutil disable.

    How can I do ?

    Christian Guitton -

    For those who also have the 5570 error : you need to open the ‘MacproEFIupdate’ file (just Open in the background but the .pkg file not clicked) and then run the mac pro firmware tool 2009-2010 ;)

    William -

    Yay followed the above and just managed a successful firmware upgrade in my 2009 mac pro to 5,1

    chris gregory -

    • After the tool has finished its work, it will tell you to shut down your computer. Just perform a normal shut down procedure.

    • After your Mac Pro is powered off, hold the power button down until you see the power LED blink quickly or you hear an audible tone. The blinking LED will precede the tone.

    • Your computer should now begin to update the firmware on its own. You should see a gray screen with a progress bar at the bottom of the screen.

    • This is a different bar than you would normally see with macOS- the firmware updating bar will be a hollow rounded rectangle that slowly fills up, rather than just a bar that slowly gets longer as you would typically see.

    • Your computer may restart on its own again following the flash.

    I just can see the gray screen, there is no progress bar. Let me know the reason why! Thanx

    f22lingu -

    • Once your machine has rebooted to the desktop, it's time for the moment of truth.

    • Open About this Mac and click on System Report

    • It is worth noting that About this Mac will still report this as a Mac Pro (2009), even after a successful flash.

    • In System Report you should see a line in the first window labeled Model Identifier - if the firmware flash was successful, you should see Mac Pro5,1

    everything went as iterated; system report still shows 4,1.

    I couldn’t mount the updater by double or right clicking, so I moved it physically.

    the system will not allow me to return to reecovery mode.

    Ed Fiala -

    Everything seems to have worked for me. System report shows 5,1. However, when I launch the installer for high sierra (10.13), the window states that a firmware update is required. Any tips would be appreciated!

    Slowbie -

    What if it doesn't work or isn't successful? Then what?

    Luigi Provencher -

    • Unless you have a compelling reason otherwise, you'll want to reenable SIP. Once again, you'll have to go into Recovery Mode just like you did before and open the Terminal.

    • Enter the following command

    • csrutil enable

    • Reboot the machine and let it load to the desktop. Open a new terminal window and enter the following command to check the status of SIP

    • csrutil status

    • If all was successful, you should get a line back that reads:

    • System Integrity Protection status: enabled.

    • And that's all there is! Now you should be able to upgrade the processors to a much wider swath of options.

    Gone through all the steps and it appears to have worked. Says finished and tells me to power off then hold power button… etc

    However it doesn’t run the flash update, just restarts in OS.

    Problem I have is different SMC for System and tray, System is 1.39F5 & processor tray is 1.39F11 and identifier at 4.1.

    Any ideas ?

    Norman -

    Bei mir hat alles geklappt, doch als ich High Sierra installieren wollte meinte das Installtionsprogramm es müsste die Firmware updaten. Kann ich das ohne Bedenken machen ohne den geflashten MacPro unbrauchbar zu machen?

    roman.franz -

    Hello, thank you Mr. Calvetti for the time you have dedicated to this guide, and I wanted to ask you a couple of questions about a strange behavior of the updater, that maybe you have already experienced and maybe you can give me an explanation.

    I follow the procedure step by step, I mount the pakage firmware, I launch the upgrade tool, it creates the ramdisc, it performs the patches, it updates the target folders, I turn off the mac, I turn it on again following the procedure, the led blinks, the tone is heard, it performs the particular boot, the update procedure starts, but it immediately performs a reboot, and does not perform any update, can you give me some suggestions.

    Thank you in advance

    alex andrei -

    Hi, I followed the Steps but when I reboot and hold down the power button after blinking light. the computer flashes the firmware update screen for a second and then reboots with normal start up. The firmware never get updated.

    What am I doing wrong ?

    Alex Hernandez -

    Suivi le tutoriel . Étape 1 Pour que ca marche sur le macPro 4,1 2009 il faut avoir MacOs 10.11 avec une connexion internet et la version Createinstallmedia USB installée. Étape 2 Bouton power et pomme +R pour refaire une recovery et csrutil disable dans le terminal …. De lenvironn MacOS, jai ouvert le package .dmg pour l’efi, il me dit que ce n’est pas le bon système donc je passe et sauvegarde le paquet sur mon bureau double clic, le programme de flash âge 2009-2010 pour l’efi de macPro crée un ramdisk et me propose d’éteindre le mac et lancer la procédure Étape 3 :mais en redémarrage à la deuxième étape les baies de lecteurs optique sont ouvertes après que la led clignote rapidement puis lentement.. donc il faut encore éteindre et rallumer manuellement pour obtenir le signal sonore ´wiwiwiwî ´ et la pomme avec une barre de chargement élargie mais qui reste une demie seconde a l’écran puis redémarre et après pomme +R pour refaire une recovery et csrutil enable pour réactiver le verrouillage du firmware.

    morierarimana.b -

    En fait le programme de mise à jour https://support.apple.com/kb/DL1320?view... fonctionne avec un CD de restauration, à ce moment là je peux voir la mise à jour du firmware se faire . Je vais donc renommer le fichier MP51_007F_03B.fd en MP41_0081_07B.fd pour le graver sur un CD et le mettre au moment où le lecteur s’ouvre lors du premier démarrage après avoir appuyer sur le bouton au LED clignotant . La baie s’ouvre et j’insère le CD avec le fichier que j’ai copié en renommant pour éviter que le programme EFI pense à le bloquer en mise à jour et cela devrait se passer à présent comme une mise à jour de l’EFI… à savoir que les numéros de mise jour de l’EFI ne sont pas celle du CD puisque la restauration 1.8 correspond bien à la mise à jour 1.4 et la 1.9 vaut pour l’EFI 1.5 que je veux mettre sur le Mac Pro 4,1 en 5,1

    morierarimana.b -

    hi does anyone know if this will work with 2009 macbook pro? thanks

    Tom L -

    No, this is for the Mac Pro tower computer.

    John Blagden -

    If people are having difficulty can I suggest these two links https://thehouseofmoth.com/turning-a-200... and http://blog.greggant.com/posts/2018/05/0...

    John Blagden -

    Is it possible to update the firmware on the Mac Pro 4,1 without having MacOS installed? I'm running a Windows only install on my Mac Pro and was hoping to save the time of creating a MacOS install to upgrade the firmware. Thanks!

    Aubrey Pullman -

    These steps were really easy to follow.
    The only thing that came up was..... after I followed all the steps and it tried to update to High Sierra (I was in Old Capitan OS)

    It told me to follow the steps "hold the power button down until you see the power LED blink quickly or you hear an audible tone. The blinking LED will precede the tone." again.

    Which I originally did and it even said under "about mac" That it was now 5.1 instead of 4.1

    So I repeated those steps and all worked.

    I was then able to install High Sierra and Mojave

    Hope this helps some people having issues.

    monolocco79 -

Author

Josh Calvetti

Member since: 04/12/09

8790 Reputation

97 comments

once installed the firmware 5.1 can be updated in the installation of the new OS?

infoalessio100 -

Do you mean to update to 10.13? Yes, you can do that firmware update as well. It should work automatically.

Josh Calvetti -

Can you use a processor tray designed for a 2010-2012 model after the firmware update? Not inclined to actually replace the CPU chips.

BradMacPro -

I’ve heard conflicting reports- at the very least, if it does boot with a 2010 tray, my understanding is the fans will go crazy. I don’t think it’s recommended to swap trays between versions as they have a slightly different firmware and construction. Replacing the chips is pretty easy though, and we have a guide for that as well!

Josh Calvetti -

Fans go crazy, There are two SMC chips on MacPro. One of them is on the backplate and the other one is on the cpu tray. In order to run MacPro smoothly, SMC chips needs to be synced upon boot. If they can not sync then the fans go crazy. You need to swap the TC4424P SMC chip on the 2009 cpu tray with the TC4424P SMC chip on the 2010-2012 cpu tray. This job needs top soldering skills!!. If you manage to do that then the SMC chips will be in sync and the MacPro will run smoothly. I did it with my 2009 MacPro 4.1 with 2009 4 core cpu and upgraded it to a 2009 MacPro 5.1 with 2012 12 core cpu. Also after the job done, I soldered remaining SMC from the 2012 cpu tray to my 2009 cpu tray with no SMC on it. After that it was a perfectly working 2012 cpu tray. Gave the tray to a friend who needs a 2012 cpu tray for his 2012 MacPro. He still uses that and I still use mine. You just need to find someone with top soldering skills if you don’t have any.

Anil -

What restrictions are there if you no longer have an original Apple GPU? My MacPro has an ATI Radeon HD 4870 512 MB to drive my 30” Apple monitor.

Ronald Koontz -

We’re in a similar boat: I’ve got a Radeon HD 5770, purchased from Apple, driving a 30-inch Cinema Display. I got through both BIOS upgrades fine. Perhaps display adapters with non-Apple firmware cause problems.

Tom Yager -

A quick note that might save someone trouble: Following these well-crafted instructions, my Mac Pro kept booting to my OS (10.11) instead of the firmware updater. Starting over from a Lion (10.7) startup partition worked, and then I was able to return to 10.11 to do an in-place upgrade to High Sierra from the App Store. The second firmware update from the OS installer ran without issue.

Tom Yager -

Hi Ron, thanks for the info! You should still be okay with upgrading if your GPU is one of the upgrade picks Apple offered. I have amended the introduction to reflect this as well.

If memory serves, there were 3 other GPUs Apple offered as upgrades for the 09/10 model Mac Pro. These are the

• ATI Radeon 4870

• Radeon 5770

• Radeon 5870

Provided they’re all still official Apple cards, you should be okay to proceed.

Josh Calvetti -

It is safe to upgrade my MacPro4,1 with an NVIDIA GeForce GTX 680? Thanks.

suzzz -

You have a 4870 that doesn't have the Apple EFI? If it is a reference model card, it can be pretty easily flashed with Mac EFI (Apple boot screen). I have flashed these for 4 of my friends with good success.

Benjamin Dittman -

It is because if you have a non mac gpu as your primary card none of the mac os startup screen will be displayed. You would have no idea what the mac was doing while the firmware was installing (if it even was) and just have to sit looking at a black screen and hope that it completed correctly.

hpesoj11 -

Is it safe to swap back in a non-Apple GPU once FW update is complete?

anonymous 5344 -

Yep, you can swap back to the non-Apple GPU after the update is complete.

Josh Calvetti -

Awesome! Now I can install High Sierra and hopefully Mojave later this year.

Thanks!

Milan Meiland -

I followed the instructions. I have an early 2009 MacPro 4,1 firmware. the Mac Pro 2009-2010 Firmware Tool.app would not open from the desktop of from the drop down menu. Prompt stated that the “…Fiirmware Tool.app could not be opened because it is from an unidentified developer.” Any suggestions on how to overcome this?

Kenneth J. Filarski

Kenneth J. Filarski -

Hi Kenneth,

Sounds like that’s Gatekeeper at work. If you right click on the application and click open in that menu, it should give you an option to proceed when that dialog box pops up.

Josh Calvetti -

Thank you so much for this amazing guide. Followed it exactly and had no problems upgrading the firmware of my Mac Pro 4,1 to 5,1. Now I can happily update my OS past El Capitan 10.11….

anonymous 5344 -

i am having problems doing this my Mac is a 4,1 and when i download to update tool and software to do the update i keep getting an error saying the software is not compatable or something like that i followed everything and it don’t work for me here is the specs on my mac early 2009

Processor 2x2.26 GHZ Quad-Core intel Xenon Serial Number is H0014TB4PD any help would be great thanks

Shiva Parasram -

I completed the firmware upgrade successfully. Then installed High Sierra successfully. Now my AirPort card is not recognized!

I had installed a AP card I had laying around from another Mac laptop (I think) that I had scrapped. So, I think that since the High Sierra software is assuming that this is a 2010 Mac Pro that it would also only have the AP card that came with the 2010 models.

My theory is that it will need a newer AP card than what I have. I’m honestly not sure what year my current AP card is from. Is anyone else having this problem or figured out a solution. If not, I will probably try ordering a newer AP card to stick in it or run an ethernet cable to it.

Daniel -

Hi- my mac pro died in the middle of the “flashing” section. Won’t turn on and I get 0 power to the unit whatsoever…Could it be a dead power supply or the motherboard? I’m worried…

m.zayas89 -

Danke für diese tolle ANleitung, hat prima funktioniert!! Hj

Hj Widmer -

I did this and it worked perfectly except I now have no sound. Any ideas?

The Zig -

So I’ve already updated my early 2009 Mac Pro running El Capitan to Mojave using a patch tool before I found this site and instructions. Put a new videocard in and – with the exception of not being able to use my second monitor for some reason (next fix to search) – is running beautifully. Curious if I would still be able to update the firmware to 5, 1 from 4, 1 even though Mojave is already installed and running? Wish I had found this earlier - would have saved time! Thank you in advance for your response.

Stu -

Hi @stu,

Hmm, I assume that’s dosdude’s patch tool? I’m not entirely sure though, I haven’t heard of anyone going to Mojave without flashing first. I’m not 100% sure if you can flash, but you should be able to in theory at least. The tricky bit is you’ll need the original GPU still installed to do the flash.

What firmware is your mac on at present? You can find it in System Information under the hardware overview- it’s labeled Boot ROM Version.

Josh Calvetti -

Hi Josh! It was dosdude’s patch tool that was used to install Mojave without flashing. Everything is running smoothly since installing a new video card - Radeon RX 570 - and even figured out the issue as to why the monitors were not working when using a displayport cable. Exactly what I was thinking, that in theory it should work and there’s no reason it should not but I have not found anyone who has attempted this.

I still have my original GPU which was an upgrade via Apple. It’s an ATI Radeon HD 4870. Trying to do as much research as possible before contemplating the firmware upgrade. I use this computer quite a bit for work so don’t want to end up with a very large cheese grater that does nothing.

My Boot ROM version is MP41.0081.B07. Thanks for responding and any insight/advice is welcome and much appreciated! Happy Friday!

Stu -

ive tried it over 10 times. but nothing’s changed…. ㅜㅜ i have G120 but wired original apple keyboard. Do i need original apple keyboard to succeed this procedure?!?!?!??! thanx.

f22lingu -

Anyone know if the AMD Radeon HD 7950 is compatible with this approach?

chris -

I have the same problem as mented before, I followed the instructions. I have an early 2009 MacPro. Firmware Tool.app would not open from the desktop of from the drop down menu. Prompt stated that the “…Fiirmware Tool.app could not be opened because it is from an unidentified developer.” Any suggestions on how to overcome this? Rightclick does the same,: refuse to open

Jan Schoen -

This worked for me on El Capitan:

1, Apple Menu > System Preferences > Security & Privacy >

2. under “Allow apps downloaded from:” select “Anywhere” (**you may need to click the lock at the bottom left and enter your admin password to change these settings**)

3. at the prompt, click “Allow From Anywhere” to confirm your choice

The application should open now without much resistance. I made sure to change this setting back after I was done doing what I needed to do.

USDA Certified Lean -

A couple years ago I bought what I thought was a 2012 5,1 machine, but it’s apparently a flashed 2009 model (About this Mac says mid 2009, and system information lists the Model Identifier as MacPro5,1, Boot ROM MP51.007F.B03). The machine will not upgrade past OS 10.10, or at least the App Store won’t serve me the upgrade files). I’m wondering if there’s any benefit to trying this procedure. Any other suggestions?

Thanks in advance

David -

Ihr seid die Besten!!!

Apple würde ohne euch nur halb soviel Spaß machen.

Alex -

I have a PCI-E card for Apogee audio that worked before and now doesn’t. Also noticed that 2 of the ram slots stopped working.? do I need to go back, remove the cards, re upgrade, then put back everything,, also a 5 terabyte drive won’t reinitialize? Thanks

Scot Reynolds -

I’m having an issue that I don’t see mentioned. I have an ‘09 I’ve tried this process several times and it doesn’t seems to want to work. I downloaded the EFI update and the firmware tool. I have followed all the instructions every time but I still have a 4,1 computer. I get to the restart after the blinking power light and tone. It seems like the grey screen flashes for just a second but then stops then restarts and when the computer is back on fully it’s still a 4,1. Anyone have an ideas?

Tyler Hoover -

Okay so I got no answers but I ended up figuring out myself. I realized that my computer needed the 1.4 EFI update before it could get the 1.5 EFI update provided here for the tool to work and everything to switch over to the 5,1

Tyler Hoover -

I’ve upgraded. Few important things.

1) It must be latest EFI 1.4 on Mac Pro 4.1. Was 1.3. Have to upgrade first.

2) Literaly no cards (PCI) and devices other than Apple common. USB 3.0 card from Unitek forced upgrade to fail. Unmounted, no problem.

3) After procedure have to reset PRAM (cmd+alt+P+R on restart). Without this 1333 MHz RAM modules are recognized as 1066 MHz

woody -

if you have third party memory (i have 3x16GB 1066 DIMMs from OWC) will this still work?

steven.shaefer -

Excellent work! I read through other instructions for upgrading the firmware, none were anywhere near this good. Thank you!

Derek R Orrell -

Thanks for the Tutorial. 2 Things:

You MUST update to El Capitan, else you don’t get csrutil!

Second: i had my user on a second hard disk mounted as /Users/myuser. That won’t work too. You need a User Account on the main / OS HD.

j.weber -

I use a NVIDIA GeForce GTX 680 2048 MB, I understand that with this GPU i wont be able to upgrade the firmware of my mac pro 4.1 that was upgraded to 5.1, right now my SMC Version is the 1.39f5 that don’t allow me to install high sierra.

I have a old Apple ATI Radeon HD 2600 XT, can I use this GPU to upgrade my firmware?

izidrew -

Great job Bro. I have the video card: Quadro 4000 2GB GDDR5 for mac. Can I upgrade my Mac Pro 4.1 to 5.1???? Will the video card work after installing the Sierra or High Sierra? Thanks

DinDin na Net -

I just completed the firmware upgrade from 4,1 to 5,1 can I upgrade to a higher OS than 10.11.6?

Are there other firmware upgrades that my MacPro early 2009 3.33MHz can successfully do?

Tyrone Blair -

Hallo!

Ich habe ein Mac Pro 5.1 2,8 Ghz

Aty 5770 und Nvidia GTX 660.

Als ich Mojave installieren wollte, hatte ich ein Firmware Update gemacht. Statt 140.0.0, steht dort noch immer 138.0.0. Wie komme ich auf 140.0.0?

music-production -

hi there please guys a little help here. i have that mac pro 2009 with original graphics card and every thing running os x 10.6.0 (snow leopard)

i have tried almost all the youtube tutorials on how to upgrade and flash firmware 4.1 to 5.1 but so far its been impossible.

one thing i have not been able to do on this mac is disable ISP, i have tried all the commands that may take me to the utility boot up screen by pressing command R and other combinations but nothing.

Then i heard a guy on YT that says before os x el capitan you dont need to do this, but i have a feeling he is wrong. still tried that way but nothing.

other guy said the command R combination on 10.6.0 is differerent back then if you want to get into the utility window up on boot up!, but could not fine a command combination before 10.6.0 to bring the utility window.

PLEASE I NEED TO DISABLE ISP BUT CANT HELPPPPP!!!!!!! .

I WILL really appreciate any help or ideas guys thank you very much. from London

Frank -

Hi Frank,

The guy on YouTube is correct, System Integrity Protection (SIP) was a feature introduced in 2015 with El Capitan (v 10.11). I don’t remember exactly when the recovery partition came into existence, but I know that 10.6 definitely does not have it. What I would recommend is upgrading via Software Update to 10.6.8, and then once you have access the Mac App Store you should be able to get the last “supported” version of macOS, which would be El Capitan. [http://Get El Capitan|This link here] should let you download it from the Mac App Store.

Once you have El Capitan installed you should be able to follow the tutorial.

Josh Calvetti -

thank you #Josh Calvetti i will try your suggestion will try to download El capitan via software update ( i hOpe its still available for download , if not i will have to find it somewhere else ) and i guess once i install it, recovery partition will come into existence allowing me to disable ISP , fingers crossed cheers.

Frank -

Hi Josh

I’ve read that the firmware upgrade can’t be done in El Capitan, and that the os needs to be dropped to a previous version. Is that the case? If so , why is that?

Mahombi

Terry Lott -

No, it can definitely be done in El Capitan - that’s how I’ve done it a few times now. You just have to disable SIP with El Capitan, but the directions for that are in the first few steps. Hope it helps!

Josh Calvetti -

hi terry, I have seen a guy on YT do the firmware upgrade on Yosemite beacuse he could not do it on El capitan he said and worked ( will pass u the link should i find it ) i guess you should give it a go and see what happends, you have nothing to lose. ( Am not saying Josh is wrong by any means )

Now I have hit another wall, if u guys can help me…. am upgrading to El capitan from snow leopard to disable ISP to then again upgrade to sierra o mojave but when am installing el capitan i get a message saying ( THIS INSTALL COPY OF EL CAPITAN CANT BE VERIFIED, IT MAY BE CORRUPTED OR TAMPARED WITH DURING DOWNLOAD) . I HAVE DOWNloaded El capitan from www.appledollars.com and did a bootable usb drive TO load from but keep getting that message! HELPPPPP

Frank -

hello guys : is it possible to clone my SSD running on el capitan on a macbook pro mid 2010 13 inch to install it on my 2009 mac pro 4,1 ??? the reason is that i would like to upgrade my graphics card , processor and ram???? instead of going hitting a wall every time i try to do it manually like in this tuttorial which i cant ( something always goes wrong and not able to install ) and then throw in the compatible components i have just mention thank you !!!!!

Frank -

You should be able to clone that, yeah. I’ve done it going the opposite way before with no real issues.

Josh Calvetti -

I just recently bought 128GB of DDR3 ECC 1066 MHz RAM, if I update the firmware to 5.1 will I have any issue with the RAM? Also, if I update the CPU will I be able to still use the RAM?

eeanwei -

Confused: I Flashed Mac Pro (Early 2009) 4,1 and looked successful, upgraded to High Sierra 10.13.6, but System Report Hardware Overview still shows as 4,1 instead of 5,1. And I am running High Sierra 10.13.6 successfully. How is this possible?

David W. 8/23/2019

dwalker -

Hi, thank you so much for these simple instructions. They allowed me to upgrade to high Sierra and possibly squeeze another few years from my Mac Pro!

Kristian Simsarian -

The link to the netkas forum was dead for me. The alternate tool at GitHub worked great though!

Braden Smith -

Great write-up!

Can this method be adapted for use on a 2008 Macbook Pro 4.1?

USDA Certified Lean -

Hi there! Unfortunately, no- this is limited just to the Mac Pro, which has a very different architecture.

Josh Calvetti -

Hi everybody! I've installed dosdude patched High Sierra in my Mac Pro 4.1 (Early 2009), Logic Pro and many plugins with libraries installed in a secondary HDD. Now I would upgrade to firmware 5.1 and install new cpu to add cores to my machine. Two options:

1. new HDD with El Captain to run Firmware Upgrade tool and update at 5.1. Then a fresh install with a big work to reinstall system and all plugins !

2. After the firmware update with El Captain (installed in a EFI partition of HDD), can I restore my Time Machine backup with the dosdude High Sierra and then uninstall the dosdude patch with uninstall tool? Can this patched High Sierra recognize and run the new firmware to install new cpu?

Any advice... is welcome ! Thank you for support !

ghiglino.luca -

Hi I got my MacPro updated from 4,1 to 5,1 successfully. Can I upgrade to Mojave or High Sierra now before adding a new CPU processor? I also bought a MSI Radeon RX560 video card. I have a MacPro 2009 Quad Core 3.33Ghz Intel XEON 32 GB 1066 MHz DDR3 ECC Graphics: NVIDIA GeForce GT 120 512 MB, ITB SSD OWC Mercury EXTREME Pro 6G SSD.

Tyrone Blair -

I am missing something with these instructions. After disabling SIP it request in STEP 3 that you run the Firmware tool and I presume that this is is the Firmware UpdateTool that you downloaded. What about the MacPro EFI update, what happens with this since there appears to be no mention of it in these instructions?

David Evans -

I did this years ago. Now have a dead logic (mother) board (for sure) and can’t find the Netkas firmware update etc to redo replacement 4.1 logic board and get back to 5.1. Have maxed out 5.1 tray in for dual processors etc. Please, any help

James Veenstra -

Need help please. Did this upgrade years ago for Mac Pro 4.1 to 5.1 and upgraded the tray (memory and processors) to be compatible with 5.1. Now logic board (Mother board) for sure. Can’t find the resources to do all for replacement logic board. Do have “twin” Mac Pro working yet for downloads etc. Netkas site won’t open anymore. Any help would be greatly appreciated.

James Veenstra -

Hi and thanks for the tutorial!

As someone who is not experienced at all, I have to ask about the Apple GPUs. I don’t have the original graphics card available, installed is a NVIDIA Quadro FX4800 for Mac. Alternatively I have a ATI Radeon HD3870 from an old 3,1 available.

Would those cards be working as well or should I try to get my hands on a GT120 or one of the newer Radeon models mentioned in the article?

Thanks again!

Rob Mp -

Many thanks for this tutorial ;)

I just upgraded my early 2009 MacPro and this worked flawlessly.

One note for the wireless keyboard users out there with problems entering recovery - just wait until you see the grey screen after the startup chime, count to 3 and then press CMD(Win on Windows keyboards)+R.

I found out there is a delay for USB keyboard activation while using a wired keyboard with background lightning. As soon as the light turned on, I could press the keys and they got recognized. Then I used the same delay with a wireless usb keyboard and - tadaa - it worked like a charm.

Peter Klein -

Hello, the update was execute perfectly.

I have tried to download mac osx high sierra, and if I try to lunch it , advise me that a firmware upgrade will be necessary..

Anyone have tried to upgrade the 2009 mac pro series to other higher osx ?

thank you.

Giuseppe Setteducati Jasango -

Hello, I have successfully done the firmware update, but a system update does not want to succeed. When I want to start the installation file 10.13.2, I get the hint: "This update requires macOS 10.13." An installation file "10.13.0" is not available in the App Store. 10.13.2 is the oldest version of High Sierra. What to do?

Jürgen Salzmann -

Addendum: My operating system is 10.11.6. my processor is a 2.93 GHz Quad-Core Intel Xeon Early 2009.

Jürgen Salzmann -

Just thank you for the excellent detail information that made my life so easy . truly appreciate.

Demetrios Vavvas -

It seems to be that is working after everything failed. Good work. thanks

Sergio Nery -

Hi Josh

Under OSX 10.11.6

When I launch the program I get this message:

This program requires internet access. Please connect your Mac Pro to the internet and try again.

While I am well connected to the internet!

So I can't click on "Upgrade to 2010 Firmware".

Do you have an idea?

Thank you

Eric Bene -

This totally worked, really appreciate all of this info! Only thing I had to do was update my Blackmagic desktop video after I installed 10.13.6, everything else is dialed in. Will recommend this page to any friends looking to upgrade their 4,1 machines..

steven.shaefer -

Did all this, added 3.06 6 core processor, now messages and FaceTime don’t work, more does the App Store download anything…

John Faitakes -

Hi all,

I have successfully updated the Firmware of my 2009 Mac Pro from 4,1 to 5,1 using the step-by-step instructions above.

After enabling csrutil I rebooted my Mac and found all email passwords gone as well as access to my iCloud account.

This was unexpected. I could restore access to my email accounts, but now I would like t know:

- has anyone out there seen this happen too ?

- should I be worried by the deleting of my Mail accounts passwords in this process ?

- if this can happen, should a warning this is possible be necessary

MacRuud -

I have an ESATA card installed. I read that I need to remove that prior to upgrading. True?

Shaun Kennedy -

Hi… great tutorial… thanks!! I’ve got an early 2009 quad core 2.66 running El Cap. Original GPU, CPU, etc. .. I’ve only upgraded to 20 gigs of ram. I’ve disabled SIP, mounted the dmg and ran the tool. I constantly get the dreaded 5530 error. I’ve reset PRAM (NVRAM), and SMC… still get the error. Help!!!! I also tried ejecting my back up interval 1TB disc. Everything is pretty much stock. Not sure what else to do!

Chuck

Charles Bumcrot -

Herzlichen Dank, Firmware Update war in 5 Minuten erledigt!!!! :))

roman.franz -

I can’t go to recovery mode on 4.1 Mac Pro tower 2009, it has os Sierra on it, and it will boot normally after holding option plus R after restart need help

michael niedzwiadek -

hello there is no sleep mode after installing Mojave , please help why? I am tired of turning it off every time

Michael Niedzwiadek -

I tried all google search but could not find answer why after trying to put Mac to sleep that function does not work need help really appreciated

Michael Niedzwiadek -

2009 Nehalem Mac Pro users, know this! (comment 1)

This upgrade to 5,1 model firmware causes an audio playback problem that involves Line Out. (other outputs not tested but likely the same)

For those like myself that are recording studios that record directly to uncompressed audio files (AIFF) as do most studios, the playback on a 2009 Mac Pro is failed with a twist.

The twist is… all plays back perfectly until you go past Mojave 10.14.3.

Mojave 10.14.4 and above including Catalina patches all fail to “properly” playback AIFF files.

Perhaps a simple statement helps more, if you buy a standard factory CD (not mp3) at Walmart and try to play it on your firmware modified 2009 Mac Pro running the latest version of Mojave, it will “sound like” a dirty cd, a failing optical drive or some other typical problem, it’s not typical at all and nothing is wrong.

ALL…. AIFF files tested fail to play back properly with Quick View, Quicktime 7 Pro, iTunes, Apple DVD Player, and Quicktime 10 although QT10 is 99% useable.

Robert Boyle -

2009 Nehalem Mac Pro users, know this! (comment 2)

It sounds like a disk skip even if the AIFF file is on a drive.

Before the arguments begin… this has been verified on two entirely separate different 2009 Macs with “every possible” means of verification available.

It is 100% verified, the problem is the firmware.

Just to make certain, a “beyond extensive test” was also performed.

A version of Mojave 10.14.6 on a HFS+/GUID drive was created and booted on a totally unmodified 2009 Mac Pro. (works very well by the way)

Both 2010 and 2012 Mac Pro were also tested using the HFS+/GUID Mojave drive.

Those Mac Pros with no firmware modifications played back AIFF files without flaw.

Then…. 2010 and 2012 and 2013 Mac Pros were tested also without firmware modification, (because they don’t need any), and had no trouble with AIFF file playback using any version of Mojave on APFS drives. (still waiting to test Catalina and Big Sur)

Robert Boyle -

2009 Nehalem Mac Pro users, know this! (comment 3)

Nobody noticed this because most people do not own recording studios and all their music is bandwidth limited compressed garbage, and very few use or buy CD’s anymore.

Bottom line, 2009 Mac Pros using the updated 2010 firmware will have uncompressed audio file (AIFF) playback problems if using anything past Mojave 10.14.3. (read that again and let it sink in)

Compressed audio files play back just fine.

The only solution to this problem is to update to Mojave using the firmware modifications, then create an HFS+ GUID version of Mojave, then return the firmware back to 2009 / 4,1 and run the HFs+/GUID Mojave drive. (NOTE: Software Update will not update a HFS+/GUID version of Mojave)

PS

Knowledge of Mojave requirements is assumed.

I tried dosdude Mojave legacy audio patches but did not test dosdude full Mojave patched installs because those require that firmware not be modified.

Robert Boyle -

Please Help! part 1

I ‘ve a Mac Pro 2009 4,1 dual processor, upgraded to 5,1 and got two x5680, I’ve done everything by the book and a clean reinstall of High Sierra. Problem is both processors - mac will start but I get nothing, no chime, no signal, only fans, one processor in CPU A machine will start and fan fans will go full blast. Diag led lights, all good, no blinking, no red.

I ‘ve tried (I think) everything possible, reinstalled both old processors and same thing, two processors i get nothing, one processor fans full blast but the rest ok. I have tried pram, smc, nvram and all resets. I have taken the whole mac apart, cleaned it, checked for damaged chips, components and such, and still nothing. I think it is a processor board/socket issue but i want to make sure before I spend money on that.

Jorge -

Superb. Now I have High Sierra.

versatile.ico -

Firmware von 2009 Mac Pro Anfang 2009 4,1 auf 5.1

Hi, ich habe Schwierigkeiten, das update zu machen. Ich habe den Mac Pro mit cmd+r so gestartet wie beschrieben und im Terminal csrutil disable eingegeben. Dann neu gestartet. Dann bauten sich alle Grafiken langsam auf. Also in irgend einem Modus war ich. Ich startete den Firmwareupdater. Nach ein paar Sekunden kam die Fehlermeldung 5570.

Dann öffnete ich wiederrum das Terminal, um zu sehen, ob wirklich SIP deaktiviert ist. Mit csrutil status bekam ich enable. Ich nehme an, wenn SIP wirklich deaktiviert gewesen wäre, würde dort disabled stehen.

Ich vermute, dies ist das Problem, dass ich beim Firmwareupdate immer diese Fehlermeldung bekomme.

Grafikkarte habe ich auch die alte eingebaut: ATI Radeon 4870

Speicher sind 128 GB drin. Das sollte ja vermutlich keine Rolle spielen. Als Festplatte habe ich 4 x 1TB SSDs im Raid0, um 4k Videos zu schneiden.

Hatte jemand das gleiche Problem und kann mir helfen, wie ich das Firmupdate machen kann?

Beste Dank, Andreas

Andreas K -

Hi, I followed the Steps but when I reboot and hold down the power button after blinking light. the computer flashes the firmware update screen for a second and then reboots with normal start up. The firmware never get updated.

What am I doing wrong ?

Alex Hernandez -

When do you use the Mac Pro EFI Update ?

Steve wallace -

Will this work for a MacBook Pro 5,3 Mid 2009? Im stuck on El Capitan and things are starting to not be supported.

Shake -

Will this work on this computer, or do you have a way of upgrading firmware for this computer please ? Things are getting out dated fast please help.

MacBook Pro (15-inch, Mid 2009)

Model Name: MacBook Pro

  Model Identifier: MacBookPro5,3

  Processor Name: Intel Core 2 Duo

  Processor Speed: 2.8 GHz

  Number of Processors: 1

  Total Number of Cores: 2

  L2 Cache: 6 MB

  Memory: 8 GB

  Bus Speed: 1.07 GHz

  Boot ROM Version: MBP53.00AC.B03

  SMC Version (system): 1.48f2

  Serial Number (system): W894417B64C

Shake -

@figone1995 Nope, sorry- this is only for the towers, as they have a very different architecture than the laptops.

Josh Calvetti -

Maybe are you doing a confusion between upgrading hardware firmware and upgrading operating system.

Like explained earlier, MacBook Pro 15” Mid 2009 is a laptop, while Mac Pro 2009 is a tower Mac.

OS X 10.11.6 El Capitan is the latest OS X supported on this model officially.

You have 2 solutions :

- Purchase a new Mac, or

- Install a patched system for an unsupported Mac, if you have an adventurer. ;-)

A large enthusiasts community developed patchers for many OS X versions past El Capitan.

But the best range of unsupported system patcher affordable for your MacBook Pro model is from 10.12 Sierra to 10.14 Mojave.

Search for "unsupported Mac patchers" with your favorite search engine.

Last advice: do your first install trials on an external drive in order to learn how it works, An 16GB USB thumb drive is required to create the installer patcher, whatever the system chosen.

Good luck, if you choose the follow the adventure track. Do it at your own risk…

RamOS28 -

Thanks man I really appreciate you shedding some light on this situation for me

Shake -

I just tried both upgrade tools and neither one of them worked because I'm still at 4,1. What could I be doing wrong and what do I do next?

Luigi Provencher -

Hi how much time does it take to flash because after hold the button my optical drives open themselves and after that nothing appear on the screen’s black . If I re start manually it flashes gray bar and restarts in gray splash screen and thick bar just fills up in on second .. after that the bios still mp41.0081.B07

I hooked up the gt120 card into slot 2 since I would let the first ready to put a POWERCOLOR HD 7850 ..

Any help

Appreciated

morierarimana.b -

Bonjour

Je suis très intéressé par votre tuto mais j’ai trois problèmes :

- le lien faisant référence au forum Nektas renvoie sur un site de machines à sous indonésien …?

- Le lien alternatif fonctionne mais lors de la manip le process bloque tantôt sur un erreur inattendue type 5570, tantôt il semble fonctionner mais en fin de procédure les infos système affiche toujours Mac 4,1 et non 5,1. (Procédure tentée plusieurs fois)

- A quoi sert le lien de téléchargement de mise à jour de l’Efi pro puisque il n’est pas compatible avec le système El Capitan ?

Guy -

i just bought a macpro4.1 which was upgraded to 5.1 with CPU X5690 6 cores and GPU GT 710, i wanted to do a fresh install of OS so i made bootable Mojave USB installaer and i wipe out the main ssd disk with old OS. now i cant boot the machine. my question is : did i erase all the firmware upgrade as well? what do i need to do to reinstall the OS and bring back the mac to life?

thanks

Ben -

Hi,

I am the owner of a Mac Pro 4.1 on which I installed Mac OS Monterey using Open Core Legacy Patcher.

The system report is now the following :

Nom du modèle : Mac Pro

  Identifiant du modèle : MacPro4,1

  Nom du processeur : Intel Xeon quatre cœurs

  Vitesse du processeur : 2,66 GHz

  Nombre de processeurs : 1

  Nombre total de cœurs : 4

  Cache de niveau 2 (par cœur) : 256 Ko

  Cache de niveau 3 : 8 Mo

  Technologie Hyper-Threading : Activé

  Mémoire : 16 Go

  Version du programme interne du système : 9999.999.999.999.999

  Version du chargeur de système d’exploitation : 540.120.3~37

  Version SMC (système) : 9.9999

  Version SMC (support pour processeur) : 1.39f5

  Numéro de série (système) : CK91002Q4PD

  UUID du matériel : 35E269A8-9831-57A2-9B67-16D46A13E597

  UDID d’approvisionnement : 35E269A8-9831-57A2-9B67-16D46A13E597kljo

Now I want to flash the firmware.

Can I simply following the steps you mentioned in your article without erasing the Open Core installation or is there a risk of blocking the system ?

MatB -