I downgraded 10 back to 9.0.1 but now everything is totally messed up! Some fonts don't square just symbols everywhere.

I went to the site of FF to upgrade to 10 again but it says download FF v.10 and I want to just update and not to lose all my favorites. Help, please! Thank you.

Do a cleaning (re) install and delete the folder of the program Firefox (C:\Program Files\Mozilla Firefox\).

Download a new copy of Firefox and save the file to the desktop.

Uninstall your current version of Firefox, if possible.

  • Do NOT remove the data of a personal nature when you uninstall the current version or you lose your bookmarks and other data, because all profile files will be deleted.

Delete the program folder Firefox before installing newly downloaded copy of the Firefox installer.

Your bookmarks and other profile data stored in the Firefox profile folder and will not be affected by a relocation, but make sure that you do not select delete data of a personal nature if you uninstall Firefox.

If, you have the problem then try a new profile.

See "basic troubleshooting: a new profile:

If this new profile works then you can transfer files from the old profile to the new profile, but make sure not to copy corrupted files.

See:

Tags: Firefox

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