Various methods for getting incompatible Firefox Add-Ons to work in newer browser versions
Firefox Add-Ons depend on the developer of the Add-Ons to keep them up-to-date with current and future Firefox browser versions. There are some Add-Ons that that we may use and depend on that are poorly kept up-to-date with new and future Firefox versions (Aurora/Beta/Nightly builds) by the developer/s.
Most of the time (but not always), the Add-Ons will work just fine in a new Aurora or Beta build even though the Add-On on addons/mozilla.org states only up to a lesser browser version than you want to use. Say you want to use a Firefox 6 Beta build, and the Add-On only states up to Firefox 5.0*.
Firefox will run the Add-On compatibility check when updating the browser and disable any Add-Ons that it finds are incompatible. While this may be necessary as the Add-Ons may truly have incompatibility issues, it may also not be really necessary as the Add-On might work just fine in a newer version.
This will show you a few ways to workaround the compatibility check and get the Add-On to work in the new browser version.
These methods are at your own risk. The Add-Ons may or may not work, or possibly in rare cases cause corruption in your Firefox profile. So make a backup
of your last known good Firefox profile before you do it if you're unsure.
Check the developers website
Some Add-ons will have an newer updated version on the developers personal website weeks or even months before they show up on addons/mozilla.org. Best to check the devs website first (if they have one) to see if there is an newer version than at addons/mozilla.org. You can usually find the devs website link on Mozilla addons page.
Use an Add-on
Use the Add-on Compatibility Reporter
add-on from Mozilla. It will enable the disabled incompatible add-ons. You can also test them out and report incompatible add-ons to Mozilla.
Or use the Nightly Tester Tools
add-on. It has several features.
This will just disable the browser from auto checking if any add-ons are incompatible or not, allowing them to install.
in Firefox's address bar and press Enter. Click OK for I'll be Careful, I promise
Right-click on an empty space in about
:config, and create New-Boolean
and click OK.
In the True or False
value popup that pops up next, enter False
, then OK. Restart the browser
Edit the specific Add-ons install.rdf file
Edit the version number in the install.rdf file
Navigate to Computer/Users/YourUserName/AppData/Roaming/Mozilla/Firefox/Profiles/Profilename/extensions.
The add-ons will most likely be named with numbers followed by the file extension .xpi.
You'll need to find out which one of those is the add-on you want to edit. You can open and find out which one is which and also edit the .rdf file with a file archiver like 7-Zip
(The install.rdf file will have the name of the add-on in it somewhere.)
Right-click on the add-on you want to edit, and in the context menu go to 7-Zip/Open archive
Right-click on the install.rdf file and choose Edit
Near the bottom it will show a minversion/maxversion
. Enter in the browser version number you want it to work with (if it said 5.0 and you want it to work with FF 6, put in 6 where the 5 was.
Go to File and Save
in notepad. Then click Yes to save in archive
. Restart the browser
. The add-on should now be enabled.