I’ve messed something up with the bootloader on my Orange Pi 5 Plus and I’m looking for help in digging out of this mess.

While playing with Pxvirt (Proxmox port for ARM SBCs), I had the genius idea to swap out u-boot for this EDK2 UEFI firmware: https://github.com/edk2-porting/edk2-rk3588

Now, when I attempt to boot from USB or SD, it just pops back to the UEFI screen.

I’ve manually removed every boot option except the USB or SD, but no luck. I’ve also completely formatted my eMMC and NVME to FAT32, since that seems to be the only filesystem UEFI will recognize.

I’ve connected to the OPi via Maskrom and flashed the SPI NOR with U-Boot and SPL Loader from Radxa, but still boots to UEFI.

Using Maskrom, I also tried to completely erase the contents on SPI NOR and physically removed my eMMC and NVME drives, but it still booted to UEFI.

I’ve also completely formated my eMMC and NVME to FAT32, since that seems to be the only filesystem UEFI will recognize.

Some of the boot disks I’ve tried are: PXVirt installer Orange Pi’s custom Debian Bullseye build Debian Trixie for Arm64 SystemRescue

Any recommendations on what I can do to get UEFI completely off this OPi and back to U-Boot? I don’t really care whether U-Boot is on SPI or eMMC, just need something working.