From Planet Computers
→Flashing the Gemini Android firmware
To start the flashing process, just click the big '''Download''' button, connect your
Gemini to your PC and restart the Gemini. Once booting, the flash tool will detect the unit and will start flashing the device with the selected firmware.
If instead you want to manually update your Gemini without loosing your data, you should select the '''Download Only '''option from the drop down menu. After that, make sure you select all the partition with the exception of the '''userdata''' partition, which contains your data. Your screen should look like this: