astrae:
The 'KOR' in the brackets at the end is a giveaway. The CSC (Country sales code) is screwed up, it's set to Korea instead of TNZ (Telecom)
Yeah, that's weird. I rooted the device, backed up the default ROM, installed CM7, fiddled with it a bit, then went back to the backup of the factory ROM.
I downloaded the ICS ROM from the link above and loaded that with success, so I guess that's good enough.