Join the AMA (Ask Me Anything) with the Firefox leadership team to celebrate Firefox 20th anniversary and discuss Firefox’s future on Mozilla Connect. Mark your calendar on Thursday, November 14, 18:00 - 20:00 UTC!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

downgrade from FF 4 to FF 3.6 do you delete the following files in your profile folder(extensions.cache, extensions.rdf, extensions.ini, extensions.sqlite and localstore.rdf) before you uninstall FF4 or after you reinstall FF 3.6

  • 2 replies
  • 20 have this problem
  • 3 views
  • Last reply by cor-el

scottknourek
scottknourek
more options

in earlier answers from downgrading from FF4 to FF3.6 you suggested removing certain files from the profile folder, is this done before uninstalling FF4 or after reinstalling FF3.6

in earlier answers from downgrading from FF4 to FF3.6 you suggested removing certain files from the profile folder, is this done before uninstalling FF4 or after reinstalling FF3.6

All Replies (2)

TonyE
TonyE
  • Moderator
more options

Though not too important, I would delete them after uninstalling Firefox 4 and before installing 3.6

Deleting the 3 extension.* files ensures that Firefox 3.6 checks the compatibility of extensions, this can be useful if an extension was updated when Firefox 4 was installed. Deleting localstore.rdf will reset the toolbars, removing the customizations made by Firefox 4.

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Some extensions may have updated to versions that are only compatible with Firefox 4, so you may encounter problem with reverting to a previous version. Other files in the Firefox Profile Folder may have been upgraded as well.