> Or that the rockpro64 is said to be able to boot with eMMC rather than microSD. But when you try to, it doesn't work. Back to microSD. Weirdly enough Ive heard some users whose boards DO work with eMMC. None of mine did. Again, since docu is terrible, I copied the command that works and didn't for me. Seems like bad hardware versions or something?
I would wager that you're simply running an old and incapable version of u-boot, or that you've somehow "misinstalled". My RockPro64 and my PineBook Pro - which is pretty much the same platform - boot from eMMC just fine. It cannot boot directly from the NVMe port, however.