U-Boot with direct NVMe boot support for eMMC/SPI Flash

[Wizzard]

There is a button inside PBP, it was needed to open PBP.

So, press a button and connect to PC with USB C cable (USB C on PBP)

Then after running " rkdeveloptool ld" you should see if PBP is in maskrom or loader more. Loader mode is better, as I remember.

If it is in maskrom mode, then you should run "rkdeveloptool db rk3399_loader_spinor_v1.15.114.bin"

and download that bin from here: https://dl.radxa.com/rockpi/images/loader/

I am just rewriting the steps from that site, so I hope I wrote it right,