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Ecu not found mpps8/30/2023 ![]() ![]() If you cannot do it in WinOLS that’s mean that checksum module is missing or not installed. MPPS does not support Checksums in some cars models/ECUs, if it is not displayed under write option for your car model&ECU then the Checksum is not supported. What you should know before MPPS checksum: In This case it will also be ok to checksum the file a second time. Although in a very small number of instances the MPPS Checksum may be slightly different than a checksum calculated using a differnt method. ![]() In most cases this will result in zero changes as the checksum is already made for the file. It will not cause a problem if a file is checksummed twice. What happens if I checksum a file that was already checksummed: ![]() Upon modifying the data the correct checksum must be calculated to ensure proper operation of the Engine Control Unit (ECU). A checksum is a block of digital data that is used to verify the contents is of the memory is correct. ![]()
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