Hey,
I downloaded an update file from cartronics and followed the instructions to update my GD03. The update started like normal until it stopped and bricked the car system. It just shows the Hyundai logo permanently now. The screen will open the reverse camera when I go into reverse. I've tried every reset I have come across; pressing radio and voice to reset, removing and replacing the fuse, disconnecting the battery, reseting the screen with a USB plugged in with an update file on it.
I suspect the cause is that I turned off the ignition during the update but I don't remember.
Any advice would be appreciated, thanks!