Trying to upgrade a 4006 SupIII from Catalyst 4000 L3 Switch Software (cat4000-IS-M), Version 12.1(8a)EW1 to cat4000-i9s-mz.121-19.EW1.bin and the on site tech is telling me that the switch is barfing with an error about "rommon version obsoleted" Google and CCO aren't helpful. Clues appreciated. --Chris