If I understand correctly, you are trying to use DTB from the Telos model for Meta. It won't help , they have different equipment.
The S905 models have a very old u-boot. It does not support installing the system in eMMC. There is only one workaround: install Armbian with u-boot replacement and then install LE. But replacing u-boot to limit the size of RAM used, you will only use 1Gb.
Going via this approach will limit ability of the box to perform if the ram space is reduced to 1gb from 2gb.