We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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

What is the latest version that will work on my "vintage" Powerbook G4 Mac Laptop running the 10.5.8 operating system and where is that download on the Firefox undating site?

more options

The latest version of Firefox is not compatible with my Laptop, and I could not find which of the latest versions I can use.

I was trying to upload the latest version and received an incompatibility message.

The latest version of Firefox is not compatible with my Laptop, and I could not find which of the latest versions I can use. I was trying to upload the latest version and received an incompatibility message.

Chosen solution

You have the latest for your PPC MAC, the 3.6.24 version.

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.org/en-US/firefox/8.0/system-requirements/


thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

Read this answer in context 👍 3

All Replies (2)

more options

Chosen Solution

You have the latest for your PPC MAC, the 3.6.24 version.

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.org/en-US/firefox/8.0/system-requirements/


thank you

Please mark "Solved" the answer that really solve the problem, to help others with a similar problem.

more options

A group of Mac users have created their own Community Build from the "Firefox 4+" versions.

TenFourFox for PowerPC's running Mac 10.4.11 & 10.5.8 .
http://www.floodgap.com/software/tenfourfox/

http://tenfourfox.blogspot.com/