Hi
I have exactly the same problem
* Tested on 3 different PC
* All LTP modes
* All wiring are ok (checked with multimeter)
* LTP port output 5v (so i use 5x100 ohm, tested in the cable, and on the motherboard, also checked with multimeter, and tested without resistor)
* 3x330 ohm
* LTP cable = 15cm
* 1N914 with black ring at motherboard side (tested without)
* Registry trick (disablewarmxxx)
* Tried to install old text printer on the ltp port
* PortNT95 installed
* Tested on Windows 98 and XP (also on linux)
* Xbox is the very first box (buyed the launch day of the 360), never returned to microsoft, never rrod
'Could not detect flash controller, Fatal Error'
This week i'll test with lcp2148 (usb)