A tiny Rockchip RK3328 SoC, less power consumption. Works perfectly in my music system as a network audio interface (HQPlayer NAA and ROON Bridge).
The company FriendlyELEC they do only offer Ubuntu with 5.4.y Linux kernel. Therefore, I have decided to compile NanoPi NEO3 bootloader (u-boot v2020.10 official release), and finally get ArchLinux with customized mainline realtime kernel installed on this board.
(replace sdx with the device name for the SD card on your computer)
dd if=idbloader.bin of=/dev/sdx seek=64 conv=notrunc
dd if=uboot.img of=/dev/sdx seek=16384 conv=notrunc
dd if=trust.bin of=/dev/sdx seek=24576 conv=notrunc
All the other steps, please refer to the installation manual of Rock64, https://archlinuxarm.org/platforms/armv8/rockchip/rock64