@theperfectpunk, Can you re-insert type-C and re-burn.It maybe just a accidental forehead error.Can you use a serial tool to connet the board.Serial ports print a lot of helpful information. We need it to analyze problems.
@theperfectpunk ,Because burning tools under Linux are a bit unstable, you can also use windows burning tools.If burning half fails again, that suggest using tools under Windows or burning Ubuntu firmware.
@theperfectpunk If you enter upgrade mode by tst mode. No information will be printed, you can confirmation by observing the light. You will see the Power-LED (Blue) blink for about 3 seconds. After the Power-LED (Blue) turns OFF, this indicates that the board is in Upgrade Mode (Maskrom Mode).And that you can burn the firmware.
I tried entering TST mode, but it doesn’t get detected (checked lsusb). Is there any way I can get working from u-boot. I am able to access u-boot, can I flash the whole firmware from there?.