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    Can’t manage the bootloader to unlock

    Scheduled Pinned Locked Moved Fairphone 4
    6 Posts 4 Posters 488 Views 1 Watching
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      • K Offline
        kevin.lhotellier
        last edited by

        Hi,
        I try to install Ubuntu Touch on my new FairPhone.
        On this page https://devices.ubuntu-touch.io/device/fp4/ it says “Your device must be running the Fairphone OS version of Android 11”. My version of Android is 13 since today’s first power on and update.
        So I tried to follow https://support.fairphone.com/hc/en-us/articles/18896094650513-Install-Fairphone-OS-manually to install Android 11.
        Followed " Flashing with fastboot" because it “Can be used to downgrade to an older version (for example: Android 13 → Android 11).”
        Following this steps, when I type adb devices, nothing appears on the phone but it’s listed in listed devices attached on command prompt.
        When I type adb reboot bootloader, the phone restarts on a screen FastBoot mode with “device state - locked” with 4 choices above : START/Restart bootloader/Recovery mode/Power off.
        If I type fastboot flashing unlock : waiting for any device.
        I don’t understand if I am on the expected boot screen and need some help.
        Fairphone 4.
        Thanks !

        KenedaK J 2 Replies Last reply Reply Quote 0
        • KenedaK Offline
          Keneda @kevin.lhotellier
          last edited by Keneda

          @kevin-lhotellier
          You need a code to unlock Fairphone bootloader that only Fairphone can give you.
          https://www.fairphone.com/en/bootloader-unlocking-code-for-fairphone/

          And follow their process to unlock its bootloader (from step 2).
          https://support.fairphone.com/hc/en-us/articles/10492476238865-Manage-the-Bootloader

          Also be care that Fairphone 4 don't have the anti rollback protection like the FP5 has before downgrading it, or you could brick.

          And if you succeed installing UT on it DON'T RELOCK THE BOOTLOADER, or it's a brick.

          2015-2023 : Meizu MX4 ☠️⚰️✝️
          2023-2024 : Nexus 5 ☠️⚰️✝️
          2024-***** : FPOS Fairphone 5 waiting UT for freedom 😉
          🇲🇫🇬🇧

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          • J Offline
            janmv @kevin.lhotellier
            last edited by

            @kevin-lhotellier I'm in the same situation (or similar).

            With respect to the command "fastboot flashing unlock" and its response "waiting for any device", and then waiting indefinitely...: what worked for me is to run this command as root in Ubuntu. I tried this after reading a suggestion to run the command 'as Administrator' in Windows, on the Fairphone forum.

            With repect to the instruction in UT for FP4: "Your device must be running the Fairphone OS version of Android 11 before installing another operating system. With a previously installed custom ROM, it won't work!", I wonder if a downgrade from Android 13 to 11 is at all necessary. Android 13 is hardly a custom ROM, isn't it?

            Any help or experiences regarding this last question?

            Thanks!

            MoemM 1 Reply Last reply Reply Quote 0
            • MoemM Offline
              Moem @janmv
              last edited by

              @janmv said in Can’t manage the bootloader to unlock:

              Android 13 is hardly a custom ROM, isn't it?

              It's not, but it's not Android 11 either. I would recommend taking these instructions seriously, and following them to the letter; people don't write them for fun. We don't want to see you brick your device.

              Is currently using an Op5t
              Also owns an Op1, a BQ E4.5 and an Xperia X, as well as a BQ tablet and a Pinetab2. Please, someone... make it stop.

              J 1 Reply Last reply Reply Quote 0
              • J Offline
                janmv @Moem
                last edited by

                @Moem Thanks. I downgraded to Android 11 before running the UBports installer, and that was successful. It wasn't all first-time-right (see above, had to run fastboot as root), but it was easy enough to find and overcome the obstacles using this forum.

                MoemM 1 Reply Last reply Reply Quote 0
                • MoemM Offline
                  Moem @janmv
                  last edited by

                  @janmv I'm glad to hear your good news! Well done, and I hope you'll enjoy Ubuntu Touch.

                  Is currently using an Op5t
                  Also owns an Op1, a BQ E4.5 and an Xperia X, as well as a BQ tablet and a Pinetab2. Please, someone... make it stop.

                  1 Reply Last reply Reply Quote 0
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