I just got 2 xecuter 2 chips, 1 for me 1 for a pal. i fitted to my brand new xbox, but now all i get are the stop / start and flashing xbox light telling me there is a problem. i have fitted modchips before, and i'm sure it a good install. i thought maybe there was no bios installed on the chip, not even cromwell, so, my mate has a box with evox, and we flashed both the chips with a known good bios. still the same though!! i was wondering if a new updated bios was needed for the latest xboxes? what versiom etc. any suggestions will help! P.S. with the chip off, its fine!