Problem: I'm new to the job, today I read a BMW EDC17CP02 ECU with foxflash tool , catch Obd, and when I wanted to write the tab with dpf off at 100%, I had an error. Any solution? Solution: EDC17CP02 has some various hardware with different types of tuning protection, that's why some work obd and some not. So just to be sure, never have to guess and look — just bench them all for piece of mind. It's a 5 minutes job to take the ecu out to bench it and get a full backup! do it and you can be super safe! If foxflash failed to read BMW EDC17CP02 on bench, check possible solution here http://www.pcmtuner.org/foxflash-failed-to-read-bmw-edc17cp02-solution/