The bootloader section cannot be written to as doing so would delete the programming routines from the ECU. Write new data to the program and calibration sections on the EEPROM.Due to this the 512KB OBD reads should only be written with OBD programming software as writing them with boot mode programming software will permanently delete these keys. Read all data on the EEPROM except for a small section of the bootloader that contains ECU unique keys.The built-in programming functions can do the following: The bootloader in the MS43 ECU has built in programming functions that allows for reprogramming of the ECU through the OBD connector. On the older platforms pin 7 and 8 are both used for K-Line communication. The reason why pins 7 and 8 are not shorted together on some cables is because on the newer e90 platform pin 7 is used for K-Line and pin 8 was reassigned for ethernet communication. If no switch is present, then pin 7 and 8 needs to be soldered together. If you are having communication issues with your INPA K+DCAN cable verify that pin 7 and 8 on the OBD side of the cable are shorted together, some cables provide an external switch to connect the two pins. With many softwares the Logger.S solution can also be used instead of an INPA K+DCAN cable. To be able to communicate with the ECU most available software requires an INPA K+DCAN capable USB to OBD2 adapter.
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