It is recommended to always start with performing a full read of the ECU so that you have a backup that can be restored if anything goes wrong. 4: After connection is successful you can read and write to the ECU.1: Connect the computer to the OBD plug on the bench setup or the OBD plug in the car.The bootloader utilizes several safety checks to verify that the program and calibration sections have not been corrupted, so if something goes wrong when writing new data to the EEPROM the ECU can be recovered by power cycling the ECU and then writing the data again to the ECU. 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. After making your changes: 'Save Template as' (green floppy disk button, or File -> Save as.)ĭ.To be able to communicate with the ECU most available software requires an INPA K+DCAN capable USB to OBD2 adapter. Invert RI # and DSR # signals to fool the detection of battery and ignition, in order to be able to encode.Ĭ. (Optional - if you want to use cable with newer BMWs)Ī. Open cable and solder pin #7 and #8 together. Do NOT buy the one with the CH340 Chip.Ģ. Support Thread - VAG-COM KKL cable modification for INPAĠ. K-DCAN cable will work out of the box for both reflashing and diagnosing via EDIABAS BMW software. Some cables need to be modified to provide this information back to the calling application. INPA (+all EDIABAS BMW software) require a separate signal to detect the battery and ignition.

Cable inpa