==Download and Install FlashTool on Windows==
<div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">The first step to install FlashTool on a Windows PC is to install the flash tool drivers. The drivers are needed for your Windows PC to communicate with your Gemini, the minimum requirement is to have a 64bit Windows operating system.</div>
<div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">You can find the latest drivers here: [http://support.planetcom.co.uk/download/FlashToolDrivers.zip Windows Flash Tool Drivers]</div>
<div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">Once downloaded, unzip the archive. You will find a folder called '''FlashToolDrivers''', open the folder and double click on the '''Install''' (install.bat) file. Allow the installation to complete by clicking '''Yes''' when asked to make changes.</div>
<div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">Now that the drivers have been installed, you can download the latest Windows flash tool: [http://support.planetcom.co.uk/download/FlashToolWindows.zip Windows Flash Tool]</div>
<div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">Once downloaded the Windows FlashTool, please unzip it to reveal the '''FlashToolWindows''' folder. Next, run the flash tool by double clicking on '''flash_tool''' (flash_tool.exe) file in the '''FlashToolWindows''' folder.</div>
==Download and Install FlashTool on Linux==
If you are not sure about your Gemini version, just check under Settings -> Wireless & networks. If you see a menu called SIM cards, then you have an x27 Gemini, otherwise you have an x25 Gemini.
After selecting the partition size, you can select the operating systems to use for each boot mode. Gemini supports 4 boot modes(see the Linux boot notes section below for more information):
* Boot 1: This is the default booting option when no buttons are pressed.
[[File:Screen_Shot_2018-06-21_at_11.35.58.png|center|800x600px|center|border]]
[[File:Screen_Shot_2018-06-21_at_10.52.02.png|center|799x526px|center|border]] <span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">Next, just click the </span><strong style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">Read Back</strong><span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;"> button, connect your Gemini to your PC and restart the Gemini. Once booting, the flash tool will detect the unit and will write the NVRAM partition on a file on your hard disk called NVRAM0 (see screenshot below). It’s a good idea to keep this file as a backup.</span> ==Flashing the Gemini with an alternative firmware==Be sure to follow the previous step to store a copy of the NVRAM partition as backup. Now, run the Flash tool software and click on the '''Download''' tab. Next, locate the '''Scatter-loading File''' option and click on the associated '''choose''' '''button''', as highlighted in the picture below:
[[File:flash1.png|center|640x419px|border]]
Now<span style="color: #252525; font-family: 'Source Sans Pro', open the firmware folder from the firmware zip file you downloaded and select the scatter filesans-serif; font-size: 15. If you selected an Android firmware008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">Next, then the scatter file will be calledjust click the </span><strong style="color: #252525; font-family: 'Source Sans Pro'' Gemini_Android, sans-serif; font-size: 15.txt'008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">Read Back</strong><span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;"> button, connect your Gemini to your PC and restart the Gemini. If you selected an Android/Linux firmwareOnce booting, then the scatter flash tool will detect the unit and will write the NVRAM partition on a file name will depend on your hard disk called NVRAM0 (see screenshot below). It’s a good idea to keep this file as a backup, together with the space you reserved for them, for example''' Gemini_x27_A26GB_L30GB_Multi_Boot.txt'''customised Scatter file.<br /></span>
Once you ==Flashing the Gemini Linux firmware==<div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">Be sure to follow the previous step to store a copy of the NVRAM partition as backup.Now click back on the '''Download''' tab.</div><div style="margin: 0.4em 0px 0.5em; color: #252525;" source="" sans="" pro="" sans-serif="" font-size:="" 15="" 008px="" font-style:="" normal="" font-variant-ligatures:="" font-variant-caps:="" font-weight:="" 400="" letter-spacing:="" orphans:="" 2="" text-align:="" start="" text-indent:="" 0px="" text-transform:="" none="" white-space:="" widows:="" word-spacing:="" -webkit-text-stroke-width:="" background-color:="" ffffff="" text-decoration-style:="" initial="" text-decoration-color:="">Select the '''Firmware Upgrade''' option from the drop down menu. This will automatically select all the partitions in the table.</div><span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">To start the scatter fileflashing process, just click the table should be populated as belowbig </span><strong style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial;">Download</strong><span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float:none;"> 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.</span>
<span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">The following screenshot shows a successfully completed flashing process:</span>
<span style="color: #252525; font-family: 'Source Sans Pro', sans-serif; font-size: 15.008px; font-style: normal; font-variant-ligatures: normal; font-variant-caps: normal; font-weight: 400; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; background-color: #ffffff; text-decoration-style: initial; text-decoration-color: initial; display: inline !important; float: none;">[[File:flash2Screen_Shot_2018-06-21_at_12.08.02.png|center|799x602px|border]]</span>
Make sure all the partitions are found and are checked. If some partitions are not found (location tab is empty), double checked that you unzipped the Linux module in the firmware folder.
Finally, change the '''Download Only''' drop down menu to '''Firmware Upgrade''' and click on the '''Download''' button. When switching between a standard Android to a dual boot Android/Linux firmware, you must use the '''Firmware Upgrade '''mode because you need to format the device and change the partitions.
Connect your Gemini and restart it. As soon as the Gemini is rebooted, the flash tool will detect the device and it will update the OS with the selected firmware.
==Troubleshooting==
We made efforts to make sure that the flash procedure is fail-safe, but sometimes background processes or other causes might interfere with the process. If this happens, you might experience an error such as "Failed to get PMT info", "Invalid ROM or PMT address" or "STATUS_DOWNLOAD_EXCEPTION".
If you experience this issue, please follow the actions below:
==Manually Update Android firmware==# Disconnect your Gemini from your PCPlanet Computers provides over-# Press and hold the-air update for standard Android installations. For custom installationEsc (On) key and the silver side button until the unit restarts (until the unit vibrate)# Reboot your PC# Try the flash process again, you will need to manually update the Android firmware.it should now complete without issues
To update the Android firmware, simply download the latest Android firmware from [http://support.planetcom.co.uk/index.php/Gemini_Firmware http://support.planetcom.co.uk/index.php/Gemini_Firmware] and use the '''Download Only''' option while selecting only the system partition, as in the screenshot below
==Rooted Android notes==If you choose to flash the rooted Android firmware, remember that you will have to complete the process by installing [[Filehttps:Screen_Shot_2018-06-20_at_15//magiskmanager.57com/ Magisk Manager].55.png|center|640x421px|border]]
==<br />Linux boot notes==
The multi-boot mechanism works as follows.
Starting from a switched OFF Gemini, press the Esc (On) key to start the unit until the Gemini vibrates. Once you feel the vibration you can choose the boot mode by pressing the following key combination:
==Linux dual * Boot 1: This is the default booting option when no keys or buttons are pressed.* Recovery Mode: Esc (On) is pressed. This will always boot notes==into recovery mode.* Boot 2: silver right-end side button is pressed.The dual boot mechanism works as follow* Boot 3:Both Esc(On) key and silver right-end side button are pressed at the same time
* '''Dual boot Android-Linux firmware'''** Press Esc (On) for around one second to turn ON Keep the unit and boot into Android. You should release the Esc (On) button before the screen turns ON, otherwise the unit will boot into recovery mode (see below).** Press Esc (On) for around one second to turn ON the unit and at the same time press and hold the side button until the screen turns ON to boot into Linux. You should release the Esc (On) button before the screen turns ON, but you must keep the side button keys/buttons pressed until you see the turning ON. When the screen turns ON you can release the side button, and the unit will boot into Linux.** Press Esc (On) and keep pressing the button until the screen turns ON to boot in recovery mode. At this stage the recovery mode is disabled and you will see a droid image with a red triangle and a "No command" text.
