Change the Useragent of the OS on Firefox

Question

I would like to know how to temporary change the user agent string of Firefox so that it appears I'm using a different OS than I really am. There's an addon that changes the browser u/a but I can't find one that also changes the OS agent too. Maybe not easily possible?

Answer 1

You can create your own custom user agent string using the same addon. Just go to Edit User Agent then click New. You can get samples from this site:

http://www.useragentstring.com/pages/useragentstring.php