Always a fun adventure when you buy an old server motherboard to see what state of disarray the BMC is in. Or if you have to patch the license on older boards just to get into it. Usually I just ignore the BMC on any hardware more than 5 years old.
I've been interested but the idea of SPI flasher recovery has always meant I've not bothered actually trying. Maybe I will finally on one of these old boards I have lying around..