Symptom: ECU upgrade in progress, error code [5021-31-7F22]
Cause
1. Negative response from controller to ECU upgrade erase memory or check dependency command
2. The vehicle is not a target for the event that you are about to perform
Resolution:
1. It is necessary to check which function of the AUTO mode or Manual mode was used to upgrade the ECU.
2. If it was performed in manual mode, it is necessary to check whether the ECU upgrade was attempted in a small category suitable for the controller(ROM ID not corresponding).
3. It is necessary to check whether the car is equipped with after-market equipment.
In case the above workaround doesn't resolve the issue, please contact your distributor or GIT assistance at following email for further support.
[Further Resource]
What to Do When ECU Upgrade Fails
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