That's funny. I've been searching for days on information about XBit and V1.6 and couldn't find anything so I decided to try it myself. I just got mine working about 10mins ago and logged on to the forums to post a reply and now I finally see that someone could make it work.
I had nearly the same experience as Dra60nSlayer.
Here's what worked for me:
1) I flashed the Xbit with M8_16 and tested it in another Xbox (V1.0). It seemed to work despite the bios info file saying it's only good for V1.6
2) With V1.6 box, I soldered female header pin sockets into the LPC. (I also removed the pin with the warning label in the Xenium tutorial. I don't know if this is necessary for Xbit, but I did it anyway.
3) Did the LPC rebuild according to the Xenium tutorial.
4) Soldered a wire for D0 on the bottom side D0(Lframe) via and soldered the other end to the D0 pad on the top side of the Xbit (where the pogo pin is soldered)
5) Did the header pin install just like the Xbit manual shows for V1.5 (except I didn't add the GROUND wire shown in the Xbit manual. GND already seemed to be connected to the LPC.)
6) Put it back together, booted up, and got nothing but frag. took it back apart and found I had done a sloppy soldering job on the LPC and accidentally shorted the 5V supply to LAD2 (pins 6 and
.
7) cleaned up my soldering put it back together, booted up, and got only the MS bios. Took it back apart and removed the D0 connection from the Xbit and soldered it directly to GND (to one of the ground ring screw holes).
Put it back together, booted up, and got the EvoX bios.
I've got some pictures I can post a little later if anyone is interested. But they are nothing special, you can just look at the Xenium tutorial.
I'm currently in the process of backing up the original drive, before I swap it out.
Does anyone know if leaving D0 shorted to GND could cause any problems? I'm modding this box for a friend and he never plans to use XBLive. I'm just concerned about the constant 3.3V to GND short. Anyone know for sure if it can eventually damage the D0 driver? I've read mixed opinions on this subject.