Attention! Some of ECUs can require external programming voltage to start writing. If this ECU type will be detected automatically, BitBox will ask you to perform some actions - it is possible on the BENCH only. Please check manual and YouTube video for details.
Some Keihin R8C/M16C ECUs have internal limitation for reading. It reads incomplete and incorrect file. If you receive CS error message while reading please do not use this file for writing. Try to get correct file with virtual reading with FID 226. If we have no file on server you need to read file with ECU opening with third party programmers. Also you can send us ECU for reading.