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.

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

How do I replace my current Firefox 4.0.1 with version 3.6.

  • 1 reply
  • 4 have this problem
  • 1 view
  • Last reply by cor-el

more options

My university Blackboard site will not support newest version of Firefox. How do I replace my current Firefox 4.0.1 with version 3.6.

My university Blackboard site will not support newest version of Firefox. How do I replace my current Firefox 4.0.1 with version 3.6.

All Replies (1)

more options

Download a fresh Firefox copy and save the file to the desktop.

  • Uninstall your current Firefox version.
  • Do not remove personal data if you uninstall the current version.
  • Remove the Firefox program folder before installing that downloaded copy of the Firefox installer.

Your bookmarks and other profile data are stored elsewhere in the Firefox Profile Folder and won't be affected by a reinstall, but make sure that you do not select to remove personal data if you uninstall Firefox.