One other thing to mention, the 330ohm resistors I tried are 1/2 watt. Not to mention I've even tried the JTAG wiring without resistors or diodes(saw somewhere that another person got it working that way), but for obvious reasons isn't something you want to leave in place. No luck on the direct method either.
The wattage doesn't really matter but its a bad thing you tried without the resistors, that could of easely blown one of the pins and caused it to hang high or low.
(cannot comment on anyone in this situation so it isn't 100% sure)
The J1F1 was originally intended for debug leds and i wouldn't presume another board with other pins would measure the same, the resistance measurements i gave were from a working xbox with the hack installed.
i hope you can clean up everything and it will work, otherwise just return to stock and use for live or Sell.