Agree that selling "for parts omly" on ebay is your only recourse, especially if the thrift store had a "all sales final / no returns policy". It wasn't stolen property just DOA. I miss the buy it, list it, sell it, Phantom days.. and the GO/GO4...
Plug the drone into your computer.
Start the assistant 2 software'
Select "Firmware update"
Select "restore factory Defaults"
FROM THE APP
Power on your equip.
Launch the app.
Go to Settings
Select system
Choose reset options
Select "Erase all...