kess v2 ECU chip tuning

This is a user manual of how to add tokens to Kess v2 firmware v4.036; also with how to fix “NO VALID TOKEN FILE” error when fail to add tokens.

If you get “Wake up error” when running Kess v2, please format the TF card firstly and then copy the whole software again back to TF card, finally to reflashing the CPU program.