Orangepi 3

[bfg]

I've bought this board on aliexpress which has a very good hardware specs (with 2GB RAM and 8GB emmc).
http://www.orangepi.org/Orange%20Pi%203/
Unfortunately software lacks archlinux support (only customized ubuntu/debian versions and android 7 rather unusable).

I know it's difficult but... someone can address me how to adapt an existing archlinuxarm build?

[ingamedeo]

Have you tried booting using the mainline image?

Follow the instructions here: https://wiki.archlinux.org/index.php/Orange_Pi. They are for another Orange Pi board, try following for Orange Pi One at first and provide a serial boot log.

It would seem that the Allwinner H6 has partial support in the mainline kernel >= 5.0, please also note that the Orange Pi One image is armv7 only. You may try a 64 bit next if the armv7 one works.