Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

Where can I go to download an older version of Firefox?

more options

I am using OS X 10.5.8 on a PowerPC G5, but when I attempt to download Firefox from the Mozilla site, I get an error message that says my operating system is not compatible.

I am using OS X 10.5.8 on a PowerPC G5, but when I attempt to download Firefox from the Mozilla site, I get an error message that says my operating system is not compatible.

All Replies (1)

more options

For older Macs that aren't supported in Firefox 4 / 5 / 6, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/
http://code.google.com/p/tenfourfox/downloads/list

Or use 3.6.21
http://www.mozilla.com/en-US/firefox/all-older.html