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    Not able to install any other OS on FP4

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      • L Offline
        luemn_a
        last edited by

        I've installed UT on my wife's FP4, she doesn't like it, arghh
        I've tried to install FP factory OS but no luck. Device is unlocked

        The following is the error given:

        ERROR: The critical partitions are not unlocked.
        Please refer to our support articles for help.
        ERROR: Aborting now (press Enter to terminate).

        So I though that I could try something else and this time I've tried CalyxOS and come up with another error:

        5.1. Please use the volume and power keys on the device to unlock the bootloader (critical) -

        Failed to unlock (critical) FP4 ed42d694 bootloader

        T 1 Reply Last reply Reply Quote 0
        • T Offline
          TheVancedGamer @luemn_a
          last edited by

          @luemn_a You can unlock critical partitions by executing fastboot flashing unlock_critical, then reflash FPOS and go on about installing any other OS.

          L 1 Reply Last reply Reply Quote 0
          • L Offline
            luemn_a @TheVancedGamer
            last edited by

            said in Not able to install any other OS on FP4:

            fastboot flashing unlock_critical

            Thanks @TheVancedGamer

            FAILED (remote: 'Flashing Unlock is not allowed')
            fastboot: error: Command failed

            L 1 Reply Last reply Reply Quote 0
            • MrT10001M Offline
              MrT10001
              last edited by

              Did you lock the bootloader when you had UT installed?

              Xiaomi Redmi Note 7.... And more...
              I have too many devices...

              L 1 Reply Last reply Reply Quote 0
              • stanwoodS Offline
                stanwood
                last edited by stanwood

                @TheVancedGamer said in Not able to install any other OS on FP4:

                Yes, maybe try in this order (in fastboot mode)

                fastboot flashing unlock
                fastboot flashing unlock_critical
                

                The problem is that the "fastboot flash unlock" commands induce a complete deletion of Android data, whether it is the stock ROM or a custom ROM.

                The present problem is that there is no Android ROM on this Fairphone.

                Moreover, the system is equipped with an "anti rollback" feature that determines not to allow the installation of a ROM for which security patches are older than the previous one.

                In addition, Ubuntu Touch uses recovery for OTA updates.

                For all these reasons you should never relock a bootloader on a device running Ubuntu Touch.

                I hope you'll manage to unbrick your device! If not, I suggest to call the Fairphone community on their dedicated forum. Others have experienced the same problem.

                Redmi Note 9S Stable
                If God has a computer, it must be a GNU/Linux

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                • L Offline
                  luemn_a @luemn_a
                  last edited by

                  @luemn_a No, I don't recall that. Cheers

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                  • L Offline
                    luemn_a @MrT10001
                    last edited by

                    @MrT10001 "relock a bootloader on a device running Ubuntu Touch"

                    I haven't see that option after rebooting, its just plain and simple stuff using the GUI, I'm so confused :astonished_face:

                    MrT10001M 1 Reply Last reply Reply Quote 0
                    • MrT10001M Offline
                      MrT10001 @luemn_a
                      last edited by MrT10001

                      @luemn_a What happens is you boot to the bootloader and run the command:

                      # WARNING: Do not execute the following command!!
                      # It is included only for information purposes only.
                      ./fastboot oem lock
                      

                      or

                      # WARNING: Do not execute the following command!!
                      # It is included only for information purposes only.
                      ./fastboot flashing lock
                      

                      This will lock the bootloader, and cause loads of problems to the point of bricking the device.

                      This question has been asked before in these forums along the line - if I have UT installed can I lock the bootloader?

                      If you do so you will find UT won't boot and likewise may have difficulty getting a ROM, even a stock ROM back on the device due to the bootloader version or as @stanwood pointed out, the anti rollback feature. (I have a moto g that I acquired that won't allow the bootloader to be unlocked as it has already been done and then relocked by the previous owner).

                      Xiaomi Redmi Note 7.... And more...
                      I have too many devices...

                      arubislanderA 1 Reply Last reply Reply Quote 0
                      • arubislanderA Offline
                        arubislander @MrT10001
                        last edited by

                        @MrT10001
                        I added warnings to the commands in your post in case someone thinks they are to be executed.

                        πŸ‡¦πŸ‡Ό πŸ‡³πŸ‡± πŸ‡ΊπŸ‡Έ πŸ‡ͺπŸ‡Έ
                        Happily running Ubuntu Touch
                        Google Pixel 3a (20.04 DEV)
                        JingPad (24.04 preview)
                        Meizu Pro 5 (16.04 DEV)

                        MrT10001M 1 Reply Last reply Reply Quote 1
                        • MrT10001M Offline
                          MrT10001 @arubislander
                          last edited by

                          @arubislander Thanks, I thought I had made it clear in the line I have just edited in bold..

                          I would not take the risk of locking the bootloader at all, to ensure the device is not bricked.

                          Some will and it will be fine, but a lot is down to which device. So far the only bricked devices I have are Nexus 5 and that is down to the eMMC failure and my lack of a reflow machine and micro solder skills!

                          Xiaomi Redmi Note 7.... And more...
                          I have too many devices...

                          arubislanderA 1 Reply Last reply Reply Quote 0
                          • arubislanderA Offline
                            arubislander @MrT10001
                            last edited by

                            @MrT10001 said in Not able to install any other OS on FP4:

                            Thanks, I thought I had made it clear in the line I have just edited in bold..

                            The edit does make it stand out more.

                            πŸ‡¦πŸ‡Ό πŸ‡³πŸ‡± πŸ‡ΊπŸ‡Έ πŸ‡ͺπŸ‡Έ
                            Happily running Ubuntu Touch
                            Google Pixel 3a (20.04 DEV)
                            JingPad (24.04 preview)
                            Meizu Pro 5 (16.04 DEV)

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