Been flashing a few cars now for myself and friends mainly VAG ecus and never even come close to messing up, until today :oops:

Completely clicked on the wrong file when flashing the ecu, and after flashing the engine wouldn't start, not a problem I thought I will just flash the original file back on that I saved first... And guess what, still didn't start, so now my bum is twitching like a bunnies nose :shifty:

I was using mpps to read and write the ecu

I read ecu 03g906021ar and I accidentally wrote 03g906021aq and like I said it's not running with original file

I need help to recover this ecu, I'm not sure why it's not working but would like to know the best why to fix it?

Tia

Wrote what? CAL only of full flash read?