Since this site is a Q&A for system administrators and desktop support professionals I'd decided to post my question here. Not sure if this is the best stackexchange website for this.
We have an HP Color Laserjet 4700n of course out of warranty. And we have an 49.4CF2 Service error. According to several sources online, this is firmware related.
When I switch of the printer and switch it back on, it gives this error again. I have tried to give it a cold reset. But that didn't work either. I have downloaded both firmware downloads from hp.com first one has an application which transfers the firmware to the printer, but after about 5% the printer switches again to 49.4CF2 Service error. I also tried the second firmware. So I used filezilla to transfer the .rfu file. The start of the transfer looked good. But again, after about 5% there was a lost connection.
I do not know what else I can try to resolve this error.
p.s. ping-ing the printer works. but stops when the error occurs. same for webinterface of the network printer.
EDIT: as Jan Marek and Ezio Zanghellini said: the firmware is still not updated. Seems impossible!