What to Do When an ECU Upgrade Fails

Step 1: Verify Compatibility Before Starting the ECU Upgrade

Before performing an ECU upgrade, confirm that the update is compatible with the vehicle by checking the following:

• Technical Service Bulletin (TSB):
  Refer to the relevant TSB to confirm that the update applies to the vehicle.
• ROM ID and Part Number:
  Verify that the ROM ID and Part Number meet the requirements for the update.
• Vehicle Details:
  Confirm the powertrain, Model Year, and specific Vehicle Model to ensure compatibility.

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

Step 2: Submit the Error Log Report

Submit the error log report using the Log Collection function:

• Access Path:
  Configuration > Error Log Collection
  Navigate to:
  Myfiles > Internal storage > nvcidata > log > ecu
  Compress the entire "ecu" folder or selected log files, ensuring that the total file size does not exceed 20MB.
• Refer to the official video guide for instructions on submitting the error log.

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

Notify your distributor that you have submitted an error log report and provide the following information:

• Report number
• VIN (Vehicle Identification Number)
• Distributor or dealer code
• GSW account

📌 Also, leave a message on GSW to ensure that the case is tracked and reviewed by the technical team.

• 🔗 GSW (Global Service Way)
  https://www.kia-hotline.com (for KIA)
  https://ccc.hyundai.com (for HYUNDAI & GENESIS)
  → Go to Find Diagnostic Tool and select KDS Hotline or GDS Hotline, as applicable.

Additional Tips

• Ensure that the vehicle's network connection and battery voltage are stable before retrying the upgrade.
• Confirm that the latest version of the diagnostic software is installed on the tablet.