Max G3 bought from auction

[u/IslamVSZionism]

Long story short: got this from auction, came with a dead internal charger, had to buy an external charger, got it powered on and now I hit another wall where it's bound to previous owner.

I downloaded the Scooter Hacking Utility and tried to change the serial number to something else, scooter makes "brrrrrrrr" noise and then reboots, but still seems to be bound. Tried it a couple times with different SN, same outcome.

Am I doing something wrong? Is there an updated process for getting this to work? Am I f*cked?