Install /e/ on a Fairphone FP3/3+ - “FP3”

Tip: Please read through the instructions at least once before actually following them, so as to avoid any problems later.
Caution: Flash your device only if you know what you are doing and are OK taking the associated risk. All builds are provided as best effort, without any guarantee. The /e/ project and its project members deny any and all responsibility about the consequences of using /e/ software and or /e/ services.


  • If required take a backup of all important data from your phone on an external storage device before proceeding.
  • Do not take a backup on the same device as some of these actions will format the device and delete the backup.
  • Ensure your phone is charged more than 50%
  • Check that adb and fastboot are enabled on your PC. If not you can find the setup instructions here
  • Download all the files and images mentioned in the download section below before starting the installation
  • Make sure you have a working data cable to connect your device to the PC. There are cables which are only for charging and do not transfer data.

  • Your device requires a code to unlock the bootloader. Get the code here before proceeding with the next steps

  • Enable USB debugging on your device. You can find the instructions here
Caution: Do not install /e/OS on top of a higher version of stock OS. Before installing /e/OS ensure your device has the latest stock OS of the same version as /e/OS. If only lower versions of the stock are available then install the last available lower version before installing /e/OS.

Downloads for the FP3

Try the /e/ Recovery (limited functionality)

To understand the difference between /e/OS builds check this guide

Warning: Please note some of the above links can lead to external sites

Unlock the bootloader

  • Allow the bootloader unlocking by following the official FP3 unlock documentation
  • Reboot the device on fastboot mode by running adb reboot bootloader (or press Power + Volume - if your device is off)
  • Once on fastboot mode, unlock the device by running fastboot flashing unlock

    On previous versions of fastboot, the command is fastboot oem unlock

  • The device will ask you to confirm the unlocking. Confirm by selecting UNLOCK THE BOOTLOADER and confirm with Power
  • The device reboot automatically. It will show a warning. Press Volume + or Volume - to display boot options, select fastboot and confirm with Power to reboot on fastboot

Installing /e/ from the bootloader

Tip: Some of the commands have a -S after them. Please note it is a hyphen ‘-‘ followed by a capital ‘S’ and the value 522239K
  1. Unzip the archive

     unzip fileyoudownloaded

    Replace fileyoudownloaded with the name of the archive file you downloaded . You can unzip the files into the folder where you copied the fastboot files.

    Alternately you can create a folder and unzip the archive there.

    In the second case the below commands will need the path to the folder where you unzipped the archive.

  2. Install /e/ using the following commands (from fastboot mode)

     fastboot -w
     fastboot flash system_a system.img -S 522239K
     fastboot flash boot_a boot.img
     fastboot flash vendor_a vendor.img -S 522239K
     fastboot flash dtbo_a dtbo.img
     fastboot flash vbmeta_a vbmeta.img
     fastboot flash system_b system.img -S 522239K
     fastboot flash boot_b boot.img
     fastboot flash vendor_b vendor.img -S 522239K
     fastboot flash dtbo_b dtbo.img
     fastboot flash vbmeta_b vbmeta.img
     fastboot flashing lock
    • The last command will ask you to confirm on the device to lock the bootloader.

    • Select LOCK THE BOOTLOADER with Volume + and valid with Power.

    • On previous version of fastboot, the last command is fastboot oem lock

  3. Enjoy! The device will now reboot automatically on /e/.

Getting a fastboot error ?

  • On some versions of fastboot you may get an error while running the Fastboot flash boot boot.img command

  • The below error may show up on the console

      fastboot error: couldn’t parse partition size ‘0x’
  • A workaround for this error is as under. Run this command on the console:

      fastboot getvar current-slot
  • This would show the current active slot. For e.g. if it shows a , run the below command

      fastboot --set-active=b
      fastboot flash boot_b boot.img
Tip: If you find an issue with this installation document or if you want to suggest improvements, Please create a dedicated thread on our community forum
Success: Congratulations !! Your phone should now be booting into /e/OS !!

Still need help to complete the installation ?

Check out this document: An [install Guide]([HOW-TO] Flash /e/-OS on Fairphone 3 using Debian based GNU/Linux) for the FP3

Tip: To suggest changes to this install guide documentation, please visit the FP3/3+ specific topic on our community forum. To report issues in the build please refer this guide