IF INSTALL WAS A NEW INSTALL THEN CHIP ALLREADY HAS FLASHBIOS ON IT
flashbios 3.0.1 for v1.0 to v1.6 xboxs but not v1.6b BANK 1
flashbios 3.0.3 for v1.0 to v1.6b xboxs but not v1.6 BANK 2
HOW TOO FLASH BIOS
http://www.team-xecuter.com/flashbios/
if you don,t see flashbios on ever setting then your install needs to be checked