Likely something simple I am missing. I have a super watchdog v8 firmware 32. When I initiate a shutdown from pi gui, watchdog restarts the pi. How do I shutdown so I can work on hardware?
Set the off period big enough to give you time to cut the watchdog power: wdt -off 100 for example.
A different approach is to disable the watchdog wdt -p 65000 and stop the script that refresh the watchdog