Bring OPI Back from Dead

• Install rkdeveloptool nix shell nixpkgs#rkdeveloptool
• Download SPL loader from radxa
• Download the latest firmware from radxa

rkdeveloptool db rkxx_loader_vx.xx.bin
rkdeveloptool ul rkxx_loader_vx.xx.bin

• Install the OS to nvme or SD card
• Boot the OPI with the SD card or nvme