How do I revert Firefox to a previous version and keep my profile
https://superuser.com/questions/1643618/how-do-i-revert-firefox-to-a-previous-version-and-keep-my-profile-intact
WEBApr 21, 2021 · 2 Answers. Sorted by: 10. These are instructions to install the version of Firefox you want and keep it that version, while also keeping your user profile intact. They are for Windows, although the real key to starting Firefox after the change (adding --allow-downgrade to your startup shortcut) is the same for Linux.
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