Installing Ubuntu 20.04 (Focal) with BSP uBoot with deep sleep and sound

[rbma]

And you unxz'd the image before copying it to the eMMC?

What does lsblk show on your eMMC after you've flashed the image and rebooted on the SD card?

After I flash the image, I can't boot from anything and just sit there with a yellow light forever. When I plugged the EMMC into my computer it looked like it had been flashed correctly   . I am currently downloading a new image to see if the one I used the first few times was corrupt (I currently have flashed Q4OS to the EMMC just so I could boot again). I did unxz the file and DD the .img file, as well as use Etcher. On a side note, it seems Q4OS won't boot from SD even after flashing BSP uboot   .

FWIW, I had the exact same experience trying to use ayufan's Ubuntu Focal image.  I could boot from SD, but dd to the emmc would not work.  

I ended up using Fedora, but I can't get audio working at all.