Error code occurred during ECU Upgrade (5021-FF-0025)

Symptom: 5021-FF-0025 error code occurs when trying to upgrade ECU

Cause: May occur when the ECU app security certificate is invalid

Resolution:

Tablet Settings - Select GDSM(Smart) or KDS(2.0) app > Storage > "Clear data" and "Clear Cache"

And after restarting the app, check if it works normally.

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