FP4 Root Access is possible, maybe a bit risky

Help Fairphone 4
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Disclaimer: You do this at your own risk! I’ve been running my phone this way only for about an hour, this might still eat your data, make backups!

I managed to get Magisk working, here’s what you need:

  • Unlocked bootloader

  • adb & fastboot

  • Magisk app installed

  • Either the stock boot.img provided by Fairphone (check Settings → About phone → Build number for the version you need, just use the newest one if you are on a version not yet available)

  • Or, if running an OS other than stock, the boot.img that’s being shipped with your ROM.

Step-by-step:

  1. Patch the downloaded stock boot.img with Magisk

  2. Transfer / adb pull that patched boot.img to your PC

  3. Reboot to fastboot adb reboot bootloader and temporarily boot from the patched boot.img fastboot boot /path/to/patched_boot.img
    Do not flash that boot.img!!!

  4. Wait for the device to boot (took a bit longer than usual)

  5. Open the Magisk app (press Cancel when asked to perform Additional Setup), choose direct install and reboot

  6. Have fun

I tried to directly flash a patched stock boot.img, pulled boot_a and boot_b from the phone and patched those, but never could get Wi-Fi working (despite the hint in the developer docs). This way finally worked :metal:

Performing an OTA update with Magisk installed:

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