leap123 can you understand if we are talking more or less about the same board? (You may have to open the device). Unfortunately, I don't have all the boards, but I remember that pocng had solved it. If so, I'll try to do the fix you suggested
Almost forgot but here's the board that you're talking about. The specs say it uses a Rockchip RK3228 CPU (or at least I assume it is since it doesn't seem to boot with an RK3229 device tree) and has 1 GB of RAM and 8 GB of eMMC so I'm assuming this is the same board that you're talking about.