Yea I had what i'm pretty sure is the exact same problem. When it frags, it doesn the on, off, on, off, on (red and green) thing right?
Try this. If you disconnect the +5v from the chip, with all of the other solder points still intact, does the xbox still boot normally from the original bios? If so, then your problem is not your soldering (or at least you havent shorted any connections).
Then we move on to the next part. I remember trying to reflash the damn thing to original factory conditions just to see if it would boot, but it was then that it would frag. The problem wast this, don't use the original full.bin raw bios file to reflash the thing. That's only for versions 1.0-1.5. Took me forever to figure that out, and I thought my chip was a gonner for sure.
Look around for a raw bios file named full16.bin, and reflash the entire chip with that. Then try booting it up, and if the on, off, on, off, on thing goes away (even if it still fails to boot) then u know it was a bios problem. Then you can go ahead and load evox m8 or x2 5035.
Hope this helped.
