Apparently the A64-LTS is basically identical with the SOPine, the only difference being the latter is on a CM2-compatible board that plugs into a baseboard with a SODIMM slot. I have both a SOPine+baseboard and an A64-LTS, and the same Armbian SOPine images worked on either board. Was a bit thrown because the board boots the SDCard before trying to boot from eMMC. I am not sure exactly what the differences are as far as hardware is concerned but I heard somewhere that the LPDDR3 used by the SOPine/A64-LTS is what breaks the old A64 images.