Cannot update

[Mike G R]

I am tryng to upgrade from OS X 10.4.11 to 10.5.2.
The error message reads: "This software cannot be installed on this computer."

12" iBook G4(white) 333MHz, 1.2 Gig Ram

 

[iDAG]

One thing is there is no such thing as a 333 Mhz G4. Secondly, how are you trying to install it?

 

[bassanoclapper]

How are you attempting the upgrade, do you have an original OSX Leopard install disk?

 

[robbieduncan]

"This software cannot be installed on this computer."

This is the exact error you get when trying to use a grey Restore DVD from one type of computer on another which is against the EULA: the restore DVD is only licensed for the machine it shipped with.

Try again with a legal, retail copy of Leopard.

 

[asme]

Unfortunately Leopard requires a processor of 800mhz or more.

 

[Sky Blue]

10.5 requires a 867MHz or higher processor.
EDIT: I'm guessing the OP has just downloaded to 10.5.2 installer from the Apple site? Doesn't work like that I'm afraid...