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You are here: MacNN Forums > Hardware - Troubleshooting and Discussion > Mac Desktops > Can imac 333 firmware be re-installed?

Can imac 333 firmware be re-installed?
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Fresh-Faced Recruit
Join Date: Nov 2003
Location: Seattle area
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Nov 23, 2003, 12:59 AM
 
Hello,
I'm having trouble installing any version of OSX on my Rev d. I checked my firmware version and it's 3.0? That doesn't seem right at all. Apples site says it should be 1.2.
I've reset the pram and nvram.
Any suggestions? I can run OS9.2 just fine and OSX installer runs fine until about 2% than freezes.
Thanks, Mark
     
Mac Elite
Join Date: May 2001
Location: Earth
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Nov 23, 2003, 06:01 AM
 
did you try this :

boot in Open Firmware (cmd-option-O-F)

and then :

reset-nvram
reset-all

also, a good idea would be to check the disk for bad sectors...
     
Fresh-Faced Recruit
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Nov 23, 2003, 12:37 PM
 
I'm still curious about why this imac has firmware 3.0 I still think that a REV D imac should have 1.2? Is their any way to remove the 3.o and install frimware1.2?
Thanks, Mark
     
Professional Poster
Join Date: Jun 2000
Location: St. Paul, MN
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Nov 23, 2003, 02:06 PM
 
I'd never heard of iMac Firmware 3.0 so I went to the Apple Support and actually got a couple of hits:

Mac OS X Server: iMac Firmware Update Needed for NetBoot

Has this iMac ever been used as a NetBoot client on Mac OS X Server?

Anyway ... as far as I know you can't go backwards on firmware. If you try to install an older version it won't let you. I doubt that the firmware is the culprit here.

Sorry I can't help more. Good luck.
     
Fresh-Faced Recruit
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Nov 23, 2003, 02:19 PM
 
Thanks for the responses. I did some checking on the Apple forum and found this interesting info, so I thought I would post this just in case others run acroos this issue:

You can boot into open firmware by holding the command _option _o _f _keys at startup. If it showsBuild date April 23, 1999 then you have the Firmware 1.2 which is latest version currently available from APPLE. If yours shows an earlier date you need the update. It is possible you may have a later version if you computer was serviced by an APPLE tech at some time ............. although I have not seen a later version on a 266 MHz iMac come across these forums. But it is a common occurance with the 333 iMacs.

The Firmware 1.2 will show boot rom version 3.0.f2 in the Apple System Profiler.

There has been much confusion about firmware and boot rom versions because a later firmware version for some tray-load iMacs will show boot rom version 3.0.f3 which is the same as what shows for a much earlier version of firmware. The best way to check is by looking at the build date. ------ Or --- if things are working properly you can attempt the 1.2 update and [if you have a newer version] it will give error and dialog box stating the firmware on this machine is not recognized.
     
   
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