Unable to boot from nvme Radxa Rock 5b

[JPWQ]

I've ran into two issues. The first my board won't boot off the Armbian Debian vendor image. Second it boots off the mainline Debian image, but when I try installing the boot onto the MTD via option 7 in Armbian-install it completes, but I get a solid blue LED and a UART output that hangs on BL31: Preparing for EL3 exit to normal world -> Entry point address = 0x200000 -> SPSR = 0x3c9 then it hangs. Before this I tried manually erasing the SPI and loader and reinstalling them with rkdeveloptool, but this didn't help. I would provide the UART logs, but the server is failing at uploading images. I'm looking to boot off the nvme, but I'm not sure how to resolve this.

[JPWQ]

To clarify my device currently boots but only off the micro sd card. I want to boot off the nvme.

Edited 11 hours ago by JPWQ

[JPWQ]

My fix for what I was trying accomplish, which was to run Armbian Debian with vendor kernel with nvme boot, was to install the mainline kernel change the kernel with Armbian-config and then reinstall with option 2 'Boot from MTD; system on nvme'. Installing with this option to begin with instead of trying to flash the boot loader on MTD after the fact may have been the better choice.