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    Unlock the bootloader forcibly

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      • M Offline
        marek_python
        last edited by marek_python

        Hi community,

        been trying to forcibly unlock the bootloader in Meizu 5 pro (chinese ROM) for 2 weeks now. I'm really ready to go away from being nice and go for nuke-it-from-the-orbit approach. I don't mind if I brick the device 'coz if I can't run UT on it I don't want it.
        I followed the tuts on XDA site all UT community is aware of. However, I can't pass the point where I'm supposed to type "su" into terminal emulator. It just spits out "Connection to ui timed out" meaning it won't let me execute the commands where I need elevated privileges. And for overwriting the proinfo file I do need to be root in the session. So far I haven't found a way to go around it.
        I went as far as purchasing the MRT dongle which helps with repairing Chinese phones. Sadly, for Meizu there's no option to unlock the bootloader. I can only factory-reset the phone which I always was able to do from the menu.

        The bootloader is the primary concern. Without unlocked bootloader I can't load TWRP recovery on it. Can't do anything, really.

        My phone is rooted using vendor-made root. When I go to fastboot mode it says "locked, rooted".

        Can you, community, give me some suggestions on how to unlock it using a nuke-like approach. I don't mind bricking it.

        S P 2 Replies Last reply Reply Quote 0
        • S Offline
          Stefano @marek_python
          last edited by Stefano

          @marek_python you have to follow this quide. It's rather straight forward manual.
          https://forum.xda-developers.com/meizu-pro-5/how-to/tutorial-change-region-id-to-t3323883

          In order to unlock bootloader, you need to downgrade to Flyme 5.1.3.0a (chinese) first, then install all the apps mentioned (exactly those apps with links to them, others similar won't work, trust me, I tried as well)
          then just follow the manual.

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          • M Offline
            marek_python
            last edited by

            Hi Stefano,
            I know about the tutorial. I almost memorized it. The thing is with the Flyme 5 version of the os. I'm running Flyme 7 and the menu isn't giving me option to downgrade. When I factory-reset the phone I get Flyme 7 right away. Looking for Flyme 5 ROM on the Internet is like for looking for a living unicorn. And when you actually find it you need unlocked bootloader to load it into the phone.
            I'm gonna give it another go. It's not like I have better things to do in this quarantine.

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            • S Offline
              Stefano @marek_python
              last edited by Stefano

              @marek_python That's not true. You can download 5.1.3.0A and from your factory recovery on phone to wipe and ''update'' ( in our case it's a downgrade ) the Flyme to Flyme 5. No TWRP is required at this stage.
              The recovery gives you only option to update, they never ment users to downgrade it. But it works both way, update and downgrade as well. I know, confusing. Give it a try.

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              • S Offline
                Stefano @marek_python
                last edited by

                @marek_python Btw, there is no need for unlocked bootloader to downgrade to 5.1.3.0A, only later on, when you progress...

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                • M Offline
                  marek_python
                  last edited by

                  Yeah ... I managed to downgrade the phone to Flyme 5. But the phone doesn't like it. The phone is on but the screen is off. The screen is going on and off and nothing is on it. I recorded it. https://www.dropbox.com/s/81lbqpredxw4v2k/IMG_9191.MOV?dl=0

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                  • S Offline
                    Stefano @marek_python
                    last edited by Stefano

                    @marek_python Have you wipe the phone from the recovery, while applying ''update? Try again.

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                    • M Offline
                      marek_python
                      last edited by

                      Yep, that was it. I wiped the phone and then downgraded. Now I'm gonna follow the tut and will report back. Thank you, Stefano, for your support.

                      S 1 Reply Last reply Reply Quote 1
                      • S Offline
                        Stefano @marek_python
                        last edited by

                        @marek_python Good luck. Follow the giude.

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                        • M Offline
                          marek_python
                          last edited by

                          Stefano, do you have by any chance the modified proinfo file ? The link in the tut (https://mega.nz/#!8ZJ01aZK!2WfKciJk1...EGua32_76hTBac) is broken.

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                          • S Offline
                            Stefano @marek_python
                            last edited by

                            @marek_python I'm out at the moment, will send you link later.

                            S 1 Reply Last reply Reply Quote 0
                            • M Offline
                              marek_python
                              last edited by

                              OK. Cheers.

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                              • S Offline
                                Stefano @Stefano
                                last edited by

                                @Stefano https://drive.google.com/file/d/1Ail3By0zWTU0GITQmvpyt9p3WzzvCUtD/view?usp=sharing

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                                • M Offline
                                  marek_python
                                  last edited by

                                  Stefano, where should I dump the TWRP recovery image ? I left it on sdcard then I moved it into root directory but keep getting "error: cannot load TWRP_3.0_m86.img"
                                  Where it should be located so it picks up on that ?

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                                  • S Offline
                                    Stefano @marek_python
                                    last edited by

                                    @marek_python Need reboot to bootloader and from PC flash the recovery:
                                    fastboot flash recovery TWRP_3.0_m86.img

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                                    • M Offline
                                      marek_python
                                      last edited by

                                      Yes, I know. I'm in fastboot mode and typed: fastboot flash recovery TWRP_3.0_m86.img but getting "error: cannot load TWRP_3.0_m86.img"

                                      Hence I'm asking where it is looking for the file ?

                                      LakotaubpL S 2 Replies Last reply Reply Quote 0
                                      • LakotaubpL Offline
                                        Lakotaubp @marek_python
                                        last edited by

                                        @marek_python If I remember correctly you can go to the folder you have downloaded twrp to, open the terminal there then run the command.

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                                        • S Offline
                                          Stefano @marek_python
                                          last edited by

                                          @marek_python Need to go on your PC to right directory, e.g. if you have downloaded TWRP to Downloads, then go to Downloads. (cd /Downloads ) if you're using Linux, not sure about Windows or Mac

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                                          • M Offline
                                            marek_python
                                            last edited by marek_python

                                            As turned out all I needed to do is to move the recovery file into 😄 in Windows and rename it to recovery.img . That should be noted in the guide. The fastboot won't pick up on the image unless it's called recovery.img

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                                            • M Offline
                                              marek_python
                                              last edited by marek_python

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