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

Trying to upgrade to Firefox 4, but I keep getting a message that my "architecture" doesn't support it. I have Mac OS X 10.5.8 on a PowerPC G5. Help page says Intel processor "recommended." Does that actually mean "required"? Or is something else wrong?

  • 1 reply
  • 4 have this problem
  • 3 views
  • Last reply by cor-el

more options

Trying to upgrade to Firefox 4, but I keep getting a message that my "architecture" doesn't support it. I have Mac OS X 10.5.8 on a PowerPC G5. Help page says Intel processor "recommended." Does that actually mean "required"? Or is something else wrong?

Trying to upgrade to Firefox 4, but I keep getting a message that my "architecture" doesn't support it. I have Mac OS X 10.5.8 on a PowerPC G5. Help page says Intel processor "recommended." Does that actually mean "required"? Or is something else wrong?

All Replies (1)

more options

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.

For an unofficial Firefox 7 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 (current is 3.6.23):