I was updating a friends softmodded xbox. It's a v1.0 xbox so it has the 1mb bios. So I made the appropriate size bios file, loaded it with the 007 exploit, erased it and flashed it. When I went to go reboot it, it doesn't boot at all. The green comes on for a second and turns off.
So, my thought was that when whoever modded it, didn't solder one of the jumper points, making it so that I only have access to one half of the bios. Any thoughts or tips?