I know this is an old post, but I noticed that @pista has the same box I’m trying to run.
I really like the minix neo U1, because the board itself has already soldered jtag and other pins, and everything seems to be properly labeled (it’s not granted that manufacturers write which port is what!)
I’m trying to boot this box with a recent version of uboot and linux, but it seems Impossible 😫.
@pista, if you are still around, could you please write which version of u-boot/kernel/armbian is working for you?
thanks already!