FP4. Install Fairphone OS offline (Linux Ubuntu-based)



First, complete all the steps from the article FP4. Install Fairphone OS offline


Linux Ubuntu-based (version 18.04.x and newer)

  1. Connect the Fairphone 4 (in Fastboot mode) to your computer using a USB-C certified data cable
     •   If it doesn't work on your computer, try to the following:
    1. Press simultaneously the keys "Ctrl + AltT" to open the terminal
    2. Type "sudo apt-get update" and press the "Enter ↩" key
       •   Type your system password if required
    3. Type "sudo apt-get install adb" and press the "Enter ↩" key
       •   Type your system password if required
    4. Type "sudo apt-get install mtp-tools" and press the "Enter ↩" key
       •   Type your system password if required
  2. Locate the archive you downloaded in the previous step, (usually in the Downloads folder)
    1. If you're using Chrome Browser, press simultaneously the keys "Ctrl + J". A new tab called "Downloads" will open
    2. Look for the last download, the name starts with "FP4.". Click on the writing "Show in folder"
      A new window will open
  3. Extract the archive
     •   Using Ubuntu Archive Manager:
    1. Right-click on the archive, the name starts with "FP4."
    2. Click on "Extract Here" to extract the archive.
  4. Start the terminal and navigate to the folder you just created, the name also starts with "FP4."
     •   Using the Ubuntu GUI (Graphical User Interface):
    1. Right-click on the folder
    2. Click on "Open in Terminal". A new terminal window will open
  5. In the terminal window type: "sudo chmod +x flash_fp4_factory.sh" and press the "Enter ↩" key. Type your system password if required.
  6. In the terminal window type: "sudo ./flash_fp4_factory.sh" and press the "Enter ↩" key
     •   Type your system password if required.terminal.png
  7. The following warning may appear:warning.png
    Type in "Yes" and Press the "Enter ↩" key
  8. The script will now run for a couple of minutes like in the following picture
    Once done,
    you will see the following picture
    It can take up to 15 min. Do NOT interrupt the process, it might damage the device!
  9. Done, your phone is now up to date. Your phone will now reboot, finishing the system update for a few minutes. You can now safely unplug your FP3/FP3+ from your computer
  10. Once done, for safety reasons, we strongly advise you to lock your bootloader againTo do so, visit the article Manage the bootloader of your FP4 and follow the instructions starting from the section "Lock your bootloader".