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How To Identify (find, determine) System Firmware on Mac G4 AGP

Posted on 2004-08-11
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Last Modified: 2013-11-17
The system is a Mac G4 AGP 350mhz (sawtooth M7827) running OSX 10.3

My apple reseller tells me that Apple Software Update should tell me if a firmware update is required, but it does not. From what I am able to determine from Apple support, the latest release of the system software AVAILABLE for this machine is 4.2.8.

That said, I am unable to identify what version the system is running. System Profiler doesn't indicate any system information, numbers, revisions, etc that even look like a "4.x.x" numbering scheme. Documents on the web say that this information should be under "production information" or "product information."

It does say, however, that the Boot ROM version is "151"

How can I be assured of what system firmware this machine is running, why doesn't it conform to the "4.x.x" numbering, or should I be able to update this machine?

Sincerely,
Tyler
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Question by:resonantwa
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Expert Comment

by:ok-disaster
ID: 11776884
Hi,

1) Start the System Profiler
2) Click on Hardware
3) "Boot-ROM-Version" shows the Firmware version

Cheers
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by:resonantwa
ID: 11779350
If possible, more input would be nice.

You could 100% verify that Boot-ROM-version is the same as system firmware.

You could confirm that "151" a valid system firmware for this system; and that it is an earlier version that could be upgraded.

I just need more context.

Sincerely,
Tyler
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Accepted Solution

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ok-disaster earned 200 total points
ID: 11780956
Hi,

you can double check your firmware version by booting into open firmware. To do this presse "command" + "alt" + "o" + "f" at boot time. The welcome message will show something like this:

Apple PowerMac3, 4 4.2.8f1 BootROM built on [...]
Copyright 1994-2001 Apple Computer, Inc.
All Rights Reserved.
[...]

(continue booting with "boot-mac")

I don´t know if "151" is a valid version of a firmware, first check the welcome message to see if it´s different from what you got from the System Profiler. Maybe it shows a wrong (own) number!?

Cheers
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Expert Comment

by:ok-disaster
ID: 11780964
oops !
"boot-mac" = "mac-boot"
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