Here's a brief guide on how to connect a BDM interface to a Trionic7 ECU.
BDM (stands for Background Debug Mode) is an electronic interface for
debugging microcontrollers and other embedded systems. It allows direct
access to circuit components. In our case, we will be using it to
overwrite the flash memory on the Trionic ECU. Normally,
connecting via the CAN
bus is a more convenient way to flash it, but if that process fails, you
end up with a dead ECU. The only way to revive it is by attaching a BDM
controller. Guess what happened to me ;].
T7Tool and BDM utilities,