It looks like i might be OK, the initial accidental upgrade took place successfully, and i'm just now re-flashing it to the correct version to clear up any weirdness.  I'll post again if it goes wrong from here, but it looks to not have been an issue :)
Hi, i just realized i accidentally initiated a firmware upgrade on an MD3620F with 2 controllers.  I started to load MD3200/MD3220 firmware to it, only to realize about 15 minutes later that there's a separate file for MD3620F firmware/NVSRAM, is there a safe way to cancel what i've already started?  The transfer appears to be running very slowly, and i'm not sure whether it will brick my whole system, or recognize that it's wrong and cancel itself automatically.  Help!
Accidental firmware upload to MD3620F