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

Why can't I upgrade to Firefox 4.0, I have Mac OS 10.5.8, with Processor PowerPC G5 (3.1); Speed 2.1 GHz

more options

Why can't I upgrade to Firefox 4.0, I have Mac OS 10.5.8, with Processor PowerPC G5 (3.1); Speed 2.1 GHz

Why can't I upgrade to Firefox 4.0, I have Mac OS 10.5.8, with Processor PowerPC G5 (3.1); Speed 2.1 GHz

All Replies (1)

more options

For older Macs that aren't supported in Firefox 4.0, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/