August 15, 2011
(Tutorial) How To Downgrade Firefox 5 to Firefox 4
I think everyone already got a message to upgrade to Firefox 5, and so did I. But unfortunately when the upgrade was done, I found out that some of my plugins would not work on this new version.
So how to downgrade from Firefox 5 to Firefox 4? This is a simple guides or tutorial on how to downgrade back to previous version Firefox 4.0.1 without losing any of your original settings, bookmarks, add-ons and so on.
Search for Firefox 4.0.1 folder > win32 folder > en-US.
Download the file.
Install Firefox 4.0.1. (Do not uninstall previous version on your PC).
You will be automatically downgraded to Firefox 4.0.1 and your favourite add-ons, bookmarks and setting will remain untouched.