I have a vvdi bimtool pro. I used the newest software v1.6.2 to read isn for my bmw msd81, but it failed. I tried many times, all failed. An error message appeared “Upload part (1/2): Programming ECU… Failed! Failed to update part 1…” as below.
Xhorsetool.com engineer replied:
The latest software of BMW Tool has been updated to V1.6.5. It has fixed bugs for prepare dealer key for CAS4 via EEPROM dump, and improve the operation for E/F/G series programming and coding.
Free download VVDI BMW Tool V1.6.5
Require firmware V1.4.1
If this method cannot solve the problem, please try to use VVDI2 to read ISN to recover the ECU.