Make a backup now, as your device will be wiped.

Downloading the needed files and tools

Please download the belowed needed files and tools:

• Droidian rootfs and devtools for arch64 (nightly releases include devtools)
• Android 9 vendor
• Halium-boot
• Latest Orange Fox Recovery
• Adaptation (unofficial)

Device preparation

• A USB 2.0 port/hub with an actual USB 2.0 controller is recommended (Using fastboot on a USB 3.0 port may cause errors with some Xiaomi devices)
• Save your APN (Android)
  • The Access Point Name or APN can be found in the Settings menu of Android
  • Take a piece of paper or a text editor, and write down everything that you see on that screen
  • These are likely to include a URL (e. g., internet.carrier.net), a username, and possibly a password
• Unlock the bootloader (using Computer)
  • Refer to the instructions provided by the device manufacturer
  • Other useful sources include the LineageOS wiki and xda-developers Flash recovery (using Computer)
  • Flash Orange Fox Recovery to your device by running fastboot flash recovery OrangeFox-violet-stable@VERSION.zip
  • Boot into recovery by pressing Vol+ and Power
  • If your device boots to the stock recovery menu at some point, you should repeat this step.
• Wipe the device (using Orange Fox Recovery)
  • Go to the Wipe menu
  • Select Advanced wipe
  • Tick the boxes called Dalvik / ART cache, Cache, System, Data
  • Swipe to Wipe
  • Go back to the previous menu
  • Choose Format data and type yes
  • Go back to the main menu and select Reboot
  • Choose Recovery
• Copy the files to the device (Computer)
  • When Orange Fox Recovery is booted, open the device’s Internal storage from your computer
  • Copy all of the files you downloaded to this folder

Droidian installation

• Install the required vendor version
  • Install the file called vendor.zip as a Zip file using Orange Fox Recovery
  • Alternatively, you can enter ADB sideload mode and run adb sideload vendor.zip
• Install the boot image
  • Install the file called boot.img as an Image to the Boot partition using Orange Fox Recovery
  • Alternatively, you can enter fastboot mode and fastboot flash boot boot.img
• Install Droidian rootfs
  • Install the file called droidian-rootfs-arch64_YYYYMMDD.zip as a Zip file
  • Alternatively, you can enter ADB sideload mode and run adb sideload droidian-OFFICIAL-phosh-phone-rootfs-apiXX-arch64_YYYYMMDD.zip
  • Installing devtools
  • Installation of devtools is optional for stable releases, but it is recommended as it helps with debugging.
  • Install the file called droidian-devtools-arch64_YYYYMMDD.zip as a Zip file
  • Alternatively, you can enter ADB sideload mode and run adb sideload droidian-devtools-arch64_YYYYMMDD.zip

Finalizing the installation

• Install adaptation package as a flashable zip (Orange Fox Recovery)
  • Install the file called droidian-recovery-flashing-adaptation-violet.zip as a Zip file
  • Alternatively, you can enter ADB sideload mode and run adb sideload droidian-recovery-flashing-adaptation-violet.zip
• Boot your device
  • Go to the Reboot menu and choose System
  • Orange Fox Recovery might complain that there is no OS installed, but that’s fine
  • The first boot may take longer, and at least one spontaneous reboot is expected during the process
  • You should be greeted with the lock screen, the default password is 1234

Congratulations, if everything went well you should be booted into Droidian.

Notes

SSH access

Flashing the devtools zip enables SSH over USB. To use it, connect your phone to your computer and type ssh droidian@10.15.19.82, the password is 1234 (on Windows, you may need PuTTY)

Applications

You can find a list of mobile-friendly Linux applications at LinuxPhoneApps

Credit

mathew-dennis

mardy

Droidian Mobian UBports