Hello, I have an Audi a5 2.0 TFSI, CDNC engine model, 157kw, med 17.1 ecu. I want to remap it, so, I have kess v2 5.017, In kess I have no read option by obd, my question is, If I make and ID of the car, is safe to buy a original file from the internet, modify it, and write it by OBD ? what would be the risk? How should I do that? Im a newbie so don;t hate me. Thank you.

Under no circumstances should you write a file from internet.This ECU can be read by ECU pins with a lot of profi tools or in boot mode using FGTech,KTAG and so on.Can also use original tools for virtual read by OBD.
Have pm.