2 Replies Latest reply: Feb 4, 2014 10:16 AM by Limnos
FogKat Level 1 (0 points)

Can I upgrade an old 1.67 PowerPC G4 from its existing 10.4.11 to anything higher? What's the highest OS I can install? Want to use it as a backup surfer and/or 2nd screen to my 2.66 MacBookPro running 10.6.8. Thank you!

PowerBook, Mac OS X (10.4.11), 1.67
  • Niel Level 10 (298,367 points)

    1. Yes.

    2. Buy a retail Mac OS X 10.5 DVD from a source such as Amazon or eBay, install it, and run the 10.5.8 combo updater. It can't be updated past 10.5.8.



  • Limnos Level 8 (47,161 points)

    It's up to you but I would hesitate upgrading.   Software developers have pretty much discontinued support for 10.5 and PPCs.  Sure, you can run  slightly newer but still now outdated applications, but the PPC/Intel line is sharp cutoff.  If you want to surf you can run TenFourFox (my preference is not to go with the latest but to stick with 17.0.11 which you unfortunately can't seem to download any longer) which is still being developed for PPC computers.  I run it on my G4 and Tiger OS (plus a few other old browser tweaks you will find on this forum) and almost never encounter problem web sites.


    I haven't checked recently but used copies of Leopard (10.5) were not cheap.  Be very careful you buy a retail version disc and not one of the much cheaper but useless grey discs that will only install on the model computer with which they were supplied.  If you're still facing having to spend $100+ on a used Leopard disc you may want to consider putting it to a used Intel Mac which sees more support.