What to Do When ECU Upgrade Fails

Step 1: Verify Compatibility Before Starting the ECU Upgrade

Before performing an ECU upgrade, confirm that the upgrade is appropriate for the vehicle by checking the following:

• Technical Service Bulletin (TSB):
  Refer to the relevant TSB to ensure the update applies to the vehicle.

• ROM ID and Part Number:
  Verify that the ROM ID and part number match the requirements for the update.

• Vehicle Details:
  Double-check the powertrain, model year, and specific vehicle model to confirm compatibility.

⚠️ Proceed with the upgrade only after verifying these details. Skipping this step may result in upgrade failure or improper ECU operation.

Step 2: Submit the Error Log Report

Submit the error log report through the Log Collection function:

• Access Path:
  Configuration > Error Log Collection
  Navigate to:
  Myfiles > Internal storage > nvcidata > log > ecu
  Compress the entire "ecu" folder or selectively compress log files, ensuring the total size does not exceed 20MB.

• Refer to the official video guide for sending the error log.

Step 3: Notify Your Distributor and Leave a Message on GSW

Let your distributor know that you have submitted an error log report by providing the following information:

• Report number

• VIN (Vehicle Identification Number)

• Distributor or dealer code

• GSW account

📌If you need further assistance, please contact the North America support lines below:

United States:

• KIA: 888-542-4371

• HYUNDAI: 888-437-0308

• GENESIS: 833-681-3926

Canada:

• KIA: 888-641-4244

• HYUNDAI: 888-641-4243

Additional Tips

• Ensure the vehicle’s connectivity and battery levels are stable before retrying the upgrade.

• Confirm that your tablet has the latest version of the diagnostic software installed.