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

Firefox 4 won't open with my OSX 10.4, how can I reinstal version3

  • 4 replies
  • 85 have this problem
  • 2 views
  • Last reply by Ruthi

more options

I opened Firefox, it said it was installing updates, then paused and instructed me to download 4.0. When I dragged this to the applications folder, I said yes to replacing the older version. Then, I was told this version doesn't support my OSX 10.4. I saw on the questions, I should uninstall firefox 4, but not the older bookmarks and data, but how do I uninstal if the program won't open?

I opened Firefox, it said it was installing updates, then paused and instructed me to download 4.0. When I dragged this to the applications folder, I said yes to replacing the older version. Then, I was told this version doesn't support my OSX 10.4. I saw on the questions, I should uninstall firefox 4, but not the older bookmarks and data, but how do I uninstal if the program won't open?

Chosen solution

You can trash Firefox 4, then re-install Firefox 3.6. You can get Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

When you install Firefox 3.6 it should automatically use your existing bookmarks and other user data.

Read this answer in context 👍 14

All Replies (4)

more options

Chosen Solution

You can trash Firefox 4, then re-install Firefox 3.6. You can get Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

When you install Firefox 3.6 it should automatically use your existing bookmarks and other user data.

more options
more options

this worked well -thank you

more options

Thank you SO MUCH for helping me get rid of 4.0. It didn't work well at all for me.