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


  • Take a backup of all important data on your phone before proceeding.
  • 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: Before following these instructions please ensure that the device is on the latest Android Stock firmware. This can be done by checking for any OTA updates available in the Updater. If available run them before installing /e/OS

Downloads for the FP3

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: If you need help following this procedure or want to discuss any modification to it, please visit our dedicated topic on our community forum