My iMac G5 (second generation and, unfortunately, not under the current Apple fix) is shutting itself down. The log states that the shutdown cause is -122 and it happens after an FWOHCI Error trying to clear PHY ports. My hardware overview lists no volume or speed for my firewire. Neither firewire port will work when I tried them with my printer. I reset the SMU last night and my hardware overview actually showed a firewire speed, but this morning the G5 had shut down again and the firewire info was gone. Another odd bit of info, around the time this started happening, the date was listed as Jan. 11, 2023. Any suggestions?