Checksum Error Writing Buffer Kess V2 Verified
Compare your original "ORI" file and your "MOD" file. They must be the exact same size down to the byte. If your tuner sent a compressed file or a file with a different extension (like .txt instead of .bin), the buffer will reject it.
If OBD recovery fails, you must go to the boot pins on the ECU itself. checksum error writing buffer kess v2 verified
Some ECUs (Bosch EDC16CP, Trionic 8, Simos PPD) have a checksum monitor in the bootloader. Even if your file has a valid checksum, the ECU rejects the writing buffer command as a security measure. Compare your original "ORI" file and your "MOD" file
If the error occurs after the KESS tool has already erased the flash memory, Attempt the Recovery button within KSuite. Select the original, un-modified file (the "Stock" read). If OBD recovery fails, you must go to
3/5 stars (would be 5 stars if the checksum error issue was resolved)



