Make Old Extensions Work in Firefox 1.5

Filed in: Mozilla, Tips — September 12th, 2005

I have reviewed the newly released Firefox 1.5 beta 1. It is great, however most of our “must have” extensions does not work on it yet. Here is a trick to make Firefox 1.0 extensions work in Firefox 1.5 (of course, this is only a temporary solution before your extensions upgrade.)

At location bar, enter: about:config This will show you a list of Firefox internal preferences.
Right click on the list, select New > String
At preference name enter “app.extensions.version” (without quotes).
Then, enter “1.0” (without quotes) as the value for app.extensions.version
Restart Firefox 1.5, then enable those disabled Firefox extensions.
Restart Firefox 1.5 again to active the extensions. Done.

Note: Some of the extensions are not working in Firefox 1.5 and caused errors when you enable them. We need to disable them for Firefox to work properly.

[ Thanks to Patrick who tells us this trick in his comment ]