I may have inadvertantly downloaded to Firefox 5 instead of 4 and can not open the application because it is not supported. Can I still download Firefox 4, which I intended to do?
I wanted to upgrade from Firefox 3 to Firefox 4. But, after I completed the download and then tried to open the Firefox application, I received a pop-up message saying, "You cannot open the application "Firefox" because it is not supported on this architecture." Is it possible that I may have inadvertantly downloaded Firefox 5? I do not think that my system will support Firefox 5. I am not a techie, so I very much appreciate any help you can give me. Thank you.
Chosen solution
- Firefox 4 versions and later do not run on a PowerPC Mac.
- Firefox 4 and later require at least OS X 10.5 and an Intel Mac.
- http://www.mozilla.com/firefox/5.0/system-requirements/
For an unofficial Firefox 4 compatible version (TenFourFox) that runs on PowerPC Macs with OS X 10.4.11 or OS X 10.5.8 you can look at:
Firefox 3.6.x (Mac OS X 10.4 and later) can be found here:
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Chosen Solution
- Firefox 4 versions and later do not run on a PowerPC Mac.
- Firefox 4 and later require at least OS X 10.5 and an Intel Mac.
- http://www.mozilla.com/firefox/5.0/system-requirements/
For an unofficial Firefox 4 compatible version (TenFourFox) that runs on PowerPC Macs with OS X 10.4.11 or OS X 10.5.8 you can look at:
Firefox 3.6.x (Mac OS X 10.4 and later) can be found here: