I have just installed an x3ce chip in my v1.2 xbox. I flashed what I thought was a good version of the xecuter 3 bios onto the first bank(on, on, off, off, off) and when I power the box up, it stays on for about a second or so and then turns itself off. I also installed the same chip at the same time onto a friends v1.1 xbox and he flashed his with a cd and the xecuter 3 bios - his worked. When I tried to flash mine using this same cd on the second bank (off, on, off, off, off) it did the exact same thing. Now both of my 1 meg banks are just turning the xbox off, nothing comes on the screen at all. I am able to boot into the backup bios, but when I try to restore the banks using a cd or http, it acts as though it is working, but when I turn it back on, it just powers down again. Also, the xbox works fine with the x3 disabled (red x3 logo). Any thoughts? Thanks.