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amacproblem · Oct 30, 2007, 08:25 PM

Hello,

Concerning a Powermac G4 running 9.2.2 & attempting to upgrade to 10.3 (which requires the firmware update):

Removed all attachments except mouse, monitor and keyboard.

Ran firmware update 4.2.8 (for 2 x 450 mHz PPC AGP Graphics Powermac G4).

Restarted with "programmer's button" held in.

Tone sounded; Mac starts to boot into the update.

The folder flashes a question mark for a second, then looks like it has engaged (the screen goes blank for a second as if it were beginning to boot as usual).

The flashing question mark then appears again and remains on-screen indefinitely, requiring a manual restart with "option" key to boot into 9.2.2, at which point a message appears saying that the firmware update has not been installed.

In other words, whatever the firmware's trying to do, it isn't doing because (so it appears) it can't find the system folder.

I MUST install OS 10.3 IMMEDIATELY.

PLEASE HELP ASAP

reader50 · Oct 30, 2007, 10:54 PM

Open Apple System Profiler in 9.2.2 and check the firmware version. It may well have completed.

amacproblem · Nov 3, 2007, 04:46 PM

It was the PRAM.

"command + apple + P + R" during startup for about a minute (--> four startup chimes) allowed the update.