This video will show you how to update the Minix Neo X7 (the big one with the 16GB) digital signage device with a new firmware for supporting portrait orientation which is also known as “screen rotation” (which is not supported by the default ROM which comes with the device).
If you need to flash a Minix Neo X7 mini, we have a walkthrough for flashing the Minix Neo X7 mini firmware for supporting screen rotation.
There is also another solution for rotating the screen with no flashing. This can be done using an application that can save you the firmware flashing for screen rotating.