Install /e/ on a OnePlus 6T - “fajita” (beta)

Very important: please read the following carefully before proceeding!

Installing a new operating system on a mobile device can potentially:

  1. lead to all data destruction on the device
  2. make it an unrecoverable brick.

So please only flash your device if you know what you are doing and are OK with taking the associated risk.

The /e/ project and its project members deny any and all responsibility about the consequences of using /e/ software and/or /e/ services.

Warning : Downgrading Smartphones already on Android Q or LineageOS 17.x to Pie or from Pie OS to Oreo or Nougat can cause instability or at worst brick some devices.

Tip: If you find an issue with this installation document or to suggest any improvements , Please add your suggestions to this topic on our community forum


  1. Highly recommended: it is recommended that you have an /e/ account (like: if you want to benefit from /e/ account integration for all online services such as: email, drive, calendar, notes, tasks. Register for your free /e/ account.
  2. Make sure your computer has working adb and fastboot. Setup instructions can be found here.

    Please ensure you follow the instructions for adb and Fastboot setup exactly as given in the previous step to avoid unexpected issues during device setup.

  3. Enable USB debugging on your device.
  4. Please read through the instructions at least once completely before actually following them to avoid any problems because you missed something!

Unlocking the bootloader

Warning: Unlocking the bootloader will erase all data on your device! Before proceeding, ensure the data you would like to retain is backed up to your PC and/or a online drive.

  1. Enable OEM unlock in the Developer options under device Settings, if present.

  2. Connect the device to your PC via USB.

  3. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:

     adb reboot bootloader
  4. Once the device is in fastboot mode, verify your PC finds it by typing:

     fastboot devices
  5. Now type the following command to unlock the bootloader:

     fastboot oem unlock
  6. Alternately on some devices to unlock the bootloader you may need to type the command:

     fastboot oem unlock-go    
  7. Check if the device has been unlocked by typing the following command in command prompt (on Windows) or terminal (on Linux or macOS) window. The output will display a message similar to ‘Device unlocked: true’:

     fastboot oem device-info    
  8. If the device doesn’t automatically reboot, reboot it. It should now be unlocked.

  9. Since the device resets completely, you will need to re-enable USB debugging to continue.

Temporarily booting a custom recovery using fastboot

  1. Download a custom recovery - you can download TWRP.

  2. Connect your device to your PC via USB.
  3. On the computer, open a command prompt (on Windows) or terminal (on Linux or macOS) window, and type:
     adb reboot bootloader
  4. Once the device is in fastboot mode, verify your PC finds it by typing:
     fastboot devices
  5. Temporarily flash a recovery on your device by typing:
     fastboot flash recovery <recovery_filename>.img

    on some devices the below command may be required

     fastboot boot <recovery_filename>.img


     fastboot flash boot <recovery_filename>.img
  6. Manually reboot into recovery mode
Tip: On some devices if the device does not boot into TWRP you could try it manually by following these steps
With the device powered off, hold Volume Down + Power.

Download /e/ for fajita

Installing /e/ from custom recovery

  1. Download the /e/ install package that you’d like to install from here.
  2. If you aren’t already in recovery mode, reboot into recovery mode:

     adb reboot recovery
  3. Optional Tap the Backup button to create a backup. Make sure the backup is created in the external sdcard or copy it onto your computer as the internal storage will be formatted.
  4. Go back to return to main menu, then tap Wipe.
  5. Now tap Format Data and continue with the formatting process. This will remove encryption as well as delete all files stored on the internal storage.
  6. Return to the previous menu and tap Advanced Wipe.
  7. Select the Cache and System partitions to be wiped and then Swipe to Wipe.
  8. Sideload the /e/ .zip package:
    • On the device, select “Advanced”, “ADB Sideload”, then swipe to begin sideload.
    • On the host machine, sideload the package using:

        adb sideload
  9. Once installation has finished, return to the main menu, tap Reboot, and then System
Success: Congratulations !! Your phone should now be booting into /e/OS !!
To find some troubleshooting tips… click here

adb related errors

  • Getting a Total xFer ':' 0.01x message - Upload the /e/OS to internal storage and retry to install
  • adb ':' sideload connection failed ':' insufficient permissions for device error - Execute the commands adb kill-server and adb start-server and retry

Still need help to complete the installation ?

Check out these guides: <p>[HOWTO] Flash /e/ OS on an A/B partitioned device (OnePlus 6T with Android 10)</p>

This documentation “Install /e/ on OnePlus 6T - fajita” is a derivative of “install LineageOS on fajita” by The LineageOS Project, used under CC BY.