▶ [Currently Applicable][Prohibition] Do NOT perform ECU Upgrades via Smart Diagnosis | (KST) Oct 2, 2025
| Basic Information | |||
| Subject | Prohibition of ECU Upgrades via Smart Diagnosis (Use the ECU Upgrade menu directly) | ||
| Article Type | ☐ Issue Fix ☑ Usage Guide ☐ New Feature | ||
| Target Information | |||
| Affected Version |
Menu: Smart Diagnosis > ECU Upgrade
List (display logic)
App Versions (and earlier):
NEH-02-0091 and earlier, NVH-00-0091 and earlier, NWH-00-0091 and earlier |
||
| Regions Covered | Asia, Pacific, Europe, Middle East, Africa, Central & South America, and U.S. territories | ||
| Release Details | |||
| Date Issued | (KST) Oct 2, 2025 | ||
| Posting Window |
☑ Effective until further notice ☐ Permanent |
||
Dear Customers,
We have identified an error in the display logic of the
ECU Upgrade List within Smart Diagnosis. Due to this issue,
the
list may display incorrect upgrade targets.
Therefore, do NOT perform ECU Upgrades via Smart Diagnosis.
✅ Current Workaround (Mandatory)
-
Access ECU Upgrade directly:
- Check upgrade eligibility from the ECU Upgrade menu, not from Smart Diagnosis.
- Perform ECU Upgrade Events in AUTO or Manual Mode, as appropriate.
⛔ Prohibited
- Accessing Smart Diagnosis to view or rely on the ECU Upgrade List when making upgrade decisions.
-
Initiating an ECU Upgrade from within Smart Diagnosis.
🔧 Planned Improvement
- We are working to improve the app logic so that the ECU Upgrade List displayed through Smart Diagnosis shows the correct upgrade targets.
- Once the improvement has been completed and validated, we will issue an additional notice with instructions and the applicable versions.
⚠️ Warning — ECU Upgrade Event Visibility & TSB Checklist
-
By default, ECU Upgrade Events for which a vehicle is eligible appear in ECU Upgrade – AUTO MODE based on the vehicle model, VIN, engine (battery) type, and the target controller's ROM ID.
※ Some ECU Upgrade Events are displayed only in Manual Mode. Carefully review the applicable TSB. -
If you have confirmed, based on the TSB, that the vehicle is eligible, but the Diagnostic App (ECU Upgrade) does not display the specific event, possible causes include:
- An issue with the GSW account permissions; or
- The Distributor has not released the TSB to Dealers.
Contact your Distributor to confirm whether the TSB has been copied/released.
- If you have already performed an ECU Upgrade via Smart Diagnosis on a vehicle that was not eligible for the upgrade, stop all further operations and contact your regional NSC or the GIT Customer Service Center at Submit a request for assistance.
We apologize for any inconvenience and appreciate your cooperation in following the procedure above to ensure that ECU upgrades are performed correctly.
Quality Service Team GIT
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