We discussed this a while back in the other thread. The long and short of it is that there is some DHP-specific code in the EEPROM that the box gives to the PowrTuner software during the cable registration process.

I can see that code by using the AVT Hex application, but without the right instructions, I don't know how to change it. AVT doesn't give that information out unless you're a distributor or something.