TSchneiberg Posted November 29, 2017 Share Posted November 29, 2017 I have several PMAC(1)s that I want to upgrade firmware on. The processor is a PMAC Universal CPU with OPT-16, so they have a battery. When I try to put them in bootstrap mode, installing J4 on the CPU board, nothing happens. PEWIN 32 Pro2 just starts to communicate and does not recognize the jumper is on. All the firmware upgrade documents say this is the procedure. How do I upgrade the firmware? Link to comment Share on other sites More sharing options...
Gregs Posted May 18, 2018 Share Posted May 18, 2018 The problem is that firmware cannot be downloaded to boards with OPT-16. The only way to make that happen would be to send the board in as a repair, which would cost $500+. Link to comment Share on other sites More sharing options...
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