WTS: XBOX 360 Premium w/ upgrade firmware + 45 XBLA games

System is in perfect working order, still goes on xbox live, comes with almost 50 XBLA arcade locked to the system.

Comes with the following:

XBOX 360 Console w/ 20 gig hard drive
Power Cord
AV Cord
Ethernet Cord
1 Controller
1 Headset

Asking $350 OBO

just out of curiosity, what’s the upgrade firmware?