Hi Joe,
I wouldn't get my hopes high on the first unit.
I might be wrong but this is what I am thinking: the fact that all LEDs are on is probably because the switch ASIC is stack in reset.
the UMAD port 0 error means that the OS can't send management packets to the ASIC.
the empty flash errors may be related to the ASIC flash area. this is where the switch ASIC stores the FW. maybe this part is bad.
all together, i think you have a bad switch here. i am not sure if you will be able to recover it beyond what we tried.
Sorry i can't help further more. hope you enjoy you other switch unit :-)