I tried the Friendlyelec Nanopi Neo 2 Armbian image and booting initiated, a few messages were printed on the screen, but after the 'now loading kernel' message, the board froze. Based on this, I assume adapting Armbian to the K1 Plus should not be too difficult. Is there a good tutorial on how to do this? I am comfortable with configuring and compiling / installing Linux kernels on Ubuntu and Arch Linux, but have limited experience with preparing images for arm based SoC boards.