Ubifs system pull su from adb Unnecto U510 2NA

[Guest revolting]

I need to learn the commands to mount my Ubifs system from adb as well as the commands to properly update su binary from there my device is not rooted but the adb shell does grant me su permission, I've tried a lot of different approaches but none has worked with this device Unnecto U510 2NA Android 4.4.2 with a chipset from spreadtrum thanks in advance

Edited October 13, 2016 by revolting