If you're at the LE serial console "emmctool" will tell you which is the /dev/device for emmc, so connect ethernet and scp the A95X .img to /storage and then write u-boot to emmc with "dd if=A95MAX_boot.img of=/dev/mmcblkX bs=1M" .. this should make the box bootable from emmc again and you free up the SD card for booting some kind of OS image (LE, Armbian, etc.).
What OS do you want to restore to emmc? .. and if you already have some kind of files, what are they called and what format are they? (and where did you get them from).