[Quall999]

Well, the chips come pre-flashed, just not with a hacked MS bios. For legal reasons, the chip comes with a free, completely legal to sell, linux bios. When you first boot up your xbox, that cromwell is supposed to boot. That is the cromwell bios which came with the chip. You must find a hacked MS bios yourself on the net (x2_4981_06 is prefered for your xb version). You then rename the bios to "bios.bin", and burn it to s disk in UDF format. Record now max seems to work the best (for burning) for most people. Anyways, after the tray pops open, insert the disk with the bios.bin (cd-rw i would prefer) and close the tray. If it doesn't say "no bios update fine", it should take the bios and flash it onto the chip.

After that, it should boot normal but be able to play unsigned code.