Pinebook Pro dead after updating u-boot

[dead]

I am using Manjaro and a few days ago updated u-boot to latest version. The instructions from pacman included some `dd` commands to run post install, and after running them and rebooting the machine I was no longer able to boot back up. Black screen, so I can't see any error message.

Did I brick my device? is it possible for me to fix it in any way other than full re-install of the OS?

Do I need to connect it to UART maybe to see what the error message is?

Thanks!