iMac G4 firmware restoration/update
Hi.
I have a G4 iMac that has a lot of strange issues. OS 10.3.-installation goes without problems, but when trying to install 10.5., it fails;
- tried with my own retail-leopard about 20 times
- bought another retail-leopard and tried about 5 times
- usually ends up so that according to the iMac, the media is faulty
- once installation succeeded enough for the iMac to boot in leopard. Unfortunately the dock was visible but did not work and the command-row did not appear at all.
Hardware-test tells me that there is a problem with memory, error code was: 2MEM/3/4 DIMM1/J20. I removed the additional memory, but the test result was the same. Slot 1 should be J22, and slot 2 should be J20 - the faulty one. Which one is the additional memory slot? Both memory-cards are 1gb, and they seem to work without any problems when running 10.3.
The key-combinations during start-up do not seem to work at all. Fe. zapping PRAM does not work nor does start with "option" pressed down.
Keyboard and mouse are original and seem to work ok. HD has been tested and it has cleared them many times.
I figured that there might be a problem with Firmware, and I tried to find a restore or update file, and it seems that such files have existed, but those Apple-support pages do not seem to work anymore:
http://www.apple.com/support/imac-intl/g4/
Any ideas? How to get the firmware restoration/update?
iMac (Flat Panel 2003), Mac OS X (10.5)