Power & Source of Big Ideas

I am using eflasher to restore eMMC flash from backup file which I made it also using eflasher.
the file exists in external hard drive with exfat file system.
I tried many times to restore it but it always give me "error" message on 21%
Thanks for helping,
Is there any Android rooted image for NanoPC-T3 ?
if not, can I get ROOT access on current Android Lollipop image? I tried with KingRoot app but no luck
thx for help