That's what I was thinking for the next step.
Does the flashcode have to match exactly?
Mine is (supposedly) 540008-000480-6
From my understanding, yes. Your flashcode looks fairly commonplace though, here's your breakdown:
Q806 ASTRO IMBE Digital Operation
H14 Enhanced Digital ID Display
H869 Hardware Multikey Encryption
H38 SmartZone Systems Operation
Q173 SmartZone Omnilink MultiZone Operation
Q361 ASTRO 25 9600 Baud Trunking