Error code occurred during ECU Upgrade (5021-10-7F7F)

Symptom: While ECU upgrade 1450 is in progress, error code [5021-10-7F7F] is found with

                     upgrade failure. 

Cause: An IBU reprogram Mode NRC has occurred due to ES95485 Extended Mode.

Resolution: IBU replacement is required.

                    * The IBU replacement solution for 5021-10-7F7F is limited to the event 1450.