As long as you have fastboot access you should be able to save it.
Download the Asus firmware for your tablet from here : https://www.asus.com/my/support/Down...8/1/0/11/29/8/
Unzip it twice
copy the blob file into your fastboot folder
Open a cmd window from your fastboot folder and run these commands one after the other, waiting for each to finish:
Code:
fastboot erase system
fastboot erase recovery
fastboot erase userdata
fastboot erase boot
fastboot erase misc
fastboot erase cache
fastboot -i 0x0B05 flash system blob
fastboot -i 0x0B05 reboot
Most of the commands finish fairly quickly, the erase userdata will take a while, just be patient.
This will put you back on a stock system and you have to start from scratch again:
Flash TWRP
format data
flash rom
Good luck