One last update:
I decoded the firmware included with 1.2 and you're right, the 1.2 firmware is 3.0f2. Unfortunately the firmware appears to be compressed even after decoding it, so I'm having a hard time extracting the full date. It's something like "04/23/99 at 14:31:0something". The last digit might be 3, but I'm not sure. I think you can see the full string if you boot into Open Firmware. Otherwise, just bruteforce the last digit 0-9 ;-)
I decoded the firmware included with 1.2 and you're right, the 1.2 firmware is 3.0f2. Unfortunately the firmware appears to be compressed even after decoding it, so I'm having a hard time extracting the full date. It's something like "04/23/99 at 14:31:0something". The last digit might be 3, but I'm not sure. I think you can see the full string if you boot into Open Firmware. Otherwise, just bruteforce the last digit 0-9 ;-)