Sounds like they've gone in on SBD then, basically you connect the diag tool to the car, go into a web based program, once it connects to the car, it reads all the modules in the car, and makes sure they're up-to-date. As I say, if there's a later calibration (software) for anything it may not let you continue to do anything else.

Yeh, until the glo-plug fault is cured you will be going steady..