EDC17 C50 Bosch O 7FTN0 BMW DESKTOP OALG9L0 12139 Original ECU File

Match SW variant and program over OBD, program data block only. Remap settings as per file name and title. Warning: Checksum must be calculated on this file before programming your ECU, you can do this in WinOLS or if your programming tool handles checksums you can use that, DO NOT program the ECU without fixing the checksum. Please only buy if you are a professional and you understand how to fix the checksum.