As it happened, TomeViewer was not necessary, because Mac OS ROM was in plain view in the System Folder on the CD of the iMac-specific OS 8.6 Install CD, the OS 9.1 Full Install CD and the OS 8.6 Full Install CD.
There was an earlier firmware update for iMacs that you may not have, although that may also be unlikely if you were previously running OS X from the the same MLB.
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There was an earlier firmware update for iMacs that you may not have, although that may also be unlikely if you were previously running OS X from the the same MLB.
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