If you are reading this, chances are you have just experienced one of the most dreaded moments in the world of automotive tuning. You’ve connected your Kess V2 (or Kess V3) to the OBD port of a vehicle. You’ve selected the correct protocol. You’ve read the original file. You’ve made your adjustments in WinOLS or ECM Titanium. You go to write the new file back to the ECU... and then it hits you:
followed by "Verified: Failed."
Your heart sinks. The car may not start. The dashboard lights up like a Christmas tree. You are staring at a potential bricked ECU. checksum error writing buffer kess v2 verified