Important Notice: We're experiencing email notification issues. If you've posted a question in the community forums recently, please check your profile manually for responses while we're working to fix this.

On Monday the 3rd of March, around 5pm UTC (9am PT) users may experience a brief period of downtime while one of our underlying services is under maintenance.

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

I'm running OS X 10.5.8 & Firefox says that my computer is not compatible with the most recent upgrade. What am I missing? Thanks!

more options

I'm running OS X 10.5.8 & Firefox says that my computer is not compatible with the most recent upgrade. What am I missing? Thanks!

I'm running OS X 10.5.8 & Firefox says that my computer is not compatible with the most recent upgrade. What am I missing? Thanks!

All Replies (2)

more options
more options

The last version of Firefox which is compatible with PPC architecture is Firefox 3.6.x.
http://www.mozilla.com/en-US/firefox/all-older.html

For older Macs that aren't supported in Firefox 4+ versions, try TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

http://tenfourfox.blogspot.com/