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.

Rohkem teavet

How do I downgraqde from FF4 to the latest FF3?

more options

One of my apps doesn't work with FF4, but it worked with the latest version of FF3.

One of my apps doesn't work with FF4, but it worked with the latest version of FF3.

All Replies (3)

more options
more options

I used

http://support.mozilla.com/en-US/kb/Installing+a+previous+version+of+Firefox

This solved my problem.

Very much appreciate your help.

Murray Klug

more options

You're welcome.

Please click the Helpful button next to the answer that solved your Firefox support issue, when you are logged in, so this thread gets marked as Solved.