Use X2 Bios Manager to build a 1 meg bios with the 4976.02 in the first two banks and the 4973 in the second two. Put the bios in /c/bios on your xbox. Add a menu item of Item "Flash BIOS",@1 to the evox.ini. take off the flash jumper from the x2l and flash away. If you get a bad flash in the first bank, take the bank select jumper off to boot into the other bank and reflash. You will only need a programmer if you do something stupid like unplug the box while it is flashing.