It is most unfortunate that you committed 2 sins with your Phantom. 1) Never update these birds or controllers. 2) Let the process complete…uninterrupted.
You may have fried it as many others have experienced.
The first red flag for me was you UPDATED THE FIRMWARE! This has been mentioned to death as a DO NOT DO! Drones get bricked almost every time. Maybe a DJI end of life program?