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xpawkox
29th September, 2020, 11:44 AM
Hello everyone, have an Audi a4 b7 with a 2.0 tdi brd engine. I bought it after remap and wanted to restore the original bitmap to ecu. I have read the modified file with KESS and have two questions :welcoming:

The software number from the readed file is different than on the sticker on the ECU. Is it possible that the tuner used a file with a different serial number for modification? If so, which one should I choose?

Sticker:
SW Number: 6576286305
SW Update: 03G906018AQ 9888
748748

File readed:
SW Number: 6576286546
SW Update: 03G906018AQ 9973
748749

The next question is checksum. Do I have to calculate the checksum when I upload the original file? This is a problem for me because WINOLS requires the OLS299 plugin.

Best regards and thank you for the answers :lemo: