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This document will guide you through the necessary steps needed to flash your Gemini with Linux or Android OS.
'''Please note: ''''''<span style="color: #ff0000;">Flashing Android or Linux will delete any user data on the device. Please make sure you have a backup of any important data before starting!</span>'''
<div style="text-align: justify;">'''Important Note: <span style="color: #ff0000;">please don’t use other tools to install Linux on a flash firmware fo your Gemini as it’s easy to loose key information such as the IMEI number. In particular, never use the “Format all + download“ option in the SP Flash Tool as this erases key information stored in the NVRAM partition and can lead to a non-functional device.</span>'''</div>
'''Building from source'''
You can also build the flash tool by yourself. You will find the source code
The tool is built using Debian 9.0
[[File:flash1.png]]
Now, open the firmware folder from the firmware zip file you downloaded and select the scatter file.Each firmware package contains 2 firmware versions: '''Gemini_Android.txt''' can be used to flash a standard Android system, while '''Gemini_Android_Rooted.txt''' can be used to install a rooted Android version. You can also install a dual boot Android/Linux firmware, please refer to the [[Gemini Firmware]] to learn how to generate the scatter file.
