Current version of Thunderbird -- really OK now

lafargeotte said:

Where is that file located please?

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In your Profile folder.

Edwin said:

In your Profile folder.

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I can't find it!

(tested using only "compact_headers-5.1-tb.xpi" )
The manifest.json file should be located inside the extension_name.XPI file located under your Thunderbird profile folder.

eg. in the case of the compact headers extension, it is here:
\profile\extension\compact_headers-5.1-tb.xpi

(& just for ref: the userChrome.css file is at: )
\profile\Chrome\userChrome.css

The "extension_name.XPI" file is just a normal zip file which can be unpacked by any unzipper like 7zip and packed back using the "zip" archive format.

eg: As a test for trying out the extension in a vanilla Tbird, I unpacked the "compact_headers-5.1-tb.xpi" file using 7zip, and modified this one line in the manifest.json file.

After modification of that json file, and repacking all the files back into "compact_headers-5.1-tb.xpi", this particular extension could be installed on Tbird 118.

The repacked .xpi file could also be used to install over an already installed older extension version (also, the zip file name did not even seem to matter, as long as all constituent files were present and zipped in the zip format).

I have only tested this one extension, so would stand corrected if this process did not apply to other extensions as well.

@lafargeotte
Look in profile\extensions and it'll have an .xpi extension. Unzip that file and edit the manifest as instructed by @das10 above. Re-zip it. Now Install from file in TBird Tools Add-ons and themes Extensions and use the cog icon.

lafargeotte said:

Where is that file located please?

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It's right here:


BTW, once you get on the beta channel it will internally update in the future. Also note that if you install the beta it will install by default in a separate folder in the Programs folder so you can run the release and beta at the same time. What I do is change the install folder to just Thunderbird instead of beta because I am only using the beta version. The profile folder, however, will always be default-beta.

Edit: I guess you were looking for the extension xpi and not the 121.0b1 file.

@ltsnow Lafargetotte was looking for the manifest.json files for extensions, not the betas. Thanks for suggesting the link anyway.

You guys do realize that changing the max version number only requres you to open the manifest.json file with 7zip, change the max version number and then close the program. It will automatically repack it. Maybe that is what you are doing, but I just wanted to clarify.

Yep. Gotcha. That's how we do it. We're setting 150.* currently. That oughta take us to 2030 or so.