- Download OpenBh image _nand.zip
- Unzip the image and copy all in the root of a usb stick (vfat formatted).
- Plug the the usb in the rear of your Zgemma
- Press and hold the "menu" button on the remote control and simultaneously power on the box.
- Wait for the logo on the display of the box to start flashing and then release the "menu" button.
- Wait until the box restarts.