Okay, I want to use PBL to launch a debug bios for a v1.0 xbox. I used the debug-1.4-Gueux'NeT on my v1.4 box and it just worked out of the box sort of speak. I then tried using the same thing on my v1.0 box and thought it would work if I just replaced the bios with a debug bfm bios for v1.0. I looked at the RC4 key and it matched the RC4 key for Complex_Debug_bfm.bin from Boot.From.Media.Bios.Collection-COMPLEX. I did not check the EEPRom keys....so that may be the problem. When i try using the complex debug bios i got a quick blue screen flash and then it goes and stays at a black screen. I'm using the exact same settings as my v1.4 setup except for the bios. If anyone could give me some help on this, I'd really appreciate it.