Do you have a rectangular connector on the immobilizer connector or a square one?
If it is a rectangular one, the RX will be the last pin on the connnector or the first one depending on where you start counting. then the TX will be next to it.
Can you do a master reset as described here: http://wirecolor.com/en/qa/50193/faq-how-do-i-reset-my-evo-all?show=50193#q50193
The please flash to the latest firmware by selecting Ford Explorer 2002 to be able to access the latest firmware, reprogram in car, dcrypt and test.