Pinebook Pro not Booting at All eMMC or MicroSD

[tophneal]

I'll investigate the PBP wiki page some.

However, that doesn't clarify to me how one would go about installing 3 .IMG files in pcm720's u-boot at the same exact time?  That should be impossible to the best of my understanding.  So, what order do you do each, and are there some instructions somewhere?

There's a script, by Arglebargle, also linked there, which will assist in writing the uboot files to your eMMC (where it would be most useful.) You would simply download the 3 img files, set the emmc location in the script and run it.

However, if you're trying to use your NVMe as your boot drive, you'll want to write the .bin file to you SPI, instead of the 3 img files.