Procedure:to flash twrp
1- Open a administrator terminal and go t the intel flash utility directory
2- Copy the contents of the twrp zip file in this direcory
3- Boot into DNX fastboot mode. You have to turn on the tablet pushing Vol + and – and the power button at the same time
4- Connect the usb cable to PC.
5- In the terminal run:
fastboot boot loader.efi
6- Wait for the android fastboot screen and run:
fastboot flash recovery (name of the recovery file)
u can rename it recovery.img so the cmd will be
fastboot flash recovery recovery.img
cheers