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    Oneplus 6 bricked on fastboot mode

    Scheduled Pinned Locked Moved Oneplus 6/6T
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      • R Offline
        Reynald
        last edited by Reynald

        Hi,
        I tried to install ubtouch on Oneplus 6 with Android 10 (a mistake, I should have downgraded first to Android 9...).
        Now I can just boot in fastmode (recovery mode brings me to fastboot too) and I don't know what to do to restore Android 10 or 9 - the phone is bricked... (I can't even set it off: it boots back to fastmode).
        It was a brand new device I just bought to use ubtouch (enchilada) on πŸ˜•

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

          @reynald Phone is not bricked, you are in fastboot mode. You can recover it from this. Go and find the Android 9 ROM for that phone, you can usually flash it in fastboot mode when attached to a PC. Check the OnePlus forums out.

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

          R 1 Reply Last reply Reply Quote 1
          • R Offline
            Reynald @MrT10001
            last edited by

            @mrt10001 I tried to flash from stock Android 9 image (https://oxygenos.oneplus.net/fulldowngrade_wipe_MSM_17819_181025_2315_user_MP1_release.zip).
            I extracted the img files with payload_dumper, and flashed like explained in forums :
            fastboot flash aop_b aop.img
            fastboot flash bluetooth_a bluetooth.img
            fastboot flash bluetooth_b bluetooth.img
            fastboot flash boot_a boot.img
            fastboot flash boot_b boot.img
            fastboot flash dsp_a dsp.img
            fastboot flash dsp_b dsp.img
            fastboot flash dtbo_a dtbo.img
            fastboot flash dtbo_b dtbo.img
            fastboot flash fw_4j1ed_a fw_4j1ed.img
            fastboot flash fw_4j1ed_b fw_4j1ed.img
            fastboot flash fw_4u1ea_a fw_4u1ea.img
            fastboot flash fw_4u1ea_b fw_4u1ea.img
            fastboot flash modem_a modem.img
            fastboot flash modem_b modem.img
            fastboot flash oem_stanvbk oem_stanvbk.img
            fastboot flash qupfw_a qupfw.img
            fastboot flash qupfw_b qupfw.img
            fastboot flash storsec_a storsec.img
            fastboot flash storsec_b storsec.img
            fastboot flash system_a system.img
            fastboot flash system_b system.img
            fastboot flash vbmeta_a vbmeta.img
            fastboot flash vbmeta_b vbmeta.img
            fastboot flash vendor_a vendor.img
            fastboot flash vendor_b vendor.img
            fastboot flash LOGO_a LOGO.img
            fastboot flash LOGO_b LOGO.img
            fastboot reboot bootloader

            I rebooted, and now... the phone is really bricked (doesn't start anymore).
            So bad...

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

              @reynald When you put it on charge and press the power on button, do you get the battery charging symbol, or an LED indicator?

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

              R 1 Reply Last reply Reply Quote 0
              • R Offline
                Reynald @MrT10001
                last edited by

                @mrt10001 OK, I managed to restart it to fastboot mode (after some time...) and I'm downloading another firmware image since the previous seems to be... unusable.
                Wait and see...

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

                  @reynald Good news! I haven't bricked any phone yet when installing Ubuntu touch, but there are quirks that you have to persevere to work out (example is I could only get it to install on a Oneplus Three using windows and not Ubuntu).

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

                  R 1 Reply Last reply Reply Quote 1
                  • R Offline
                    rocket2nfinity
                    last edited by

                    You need the MSMdownload Tool from xda-developers forum. It will unbrick your device.

                    It's a windows only tool. In the forums here, there is a linux equivalent. Search op6 sub-category

                    1 Reply Last reply Reply Quote 2
                    • R Offline
                      Reynald @MrT10001
                      last edited by Reynald

                      @mrt10001 Got Mauronofrio ROM https://sourceforge.net/projects/fastbootroms/files/OnePlus 6/ and flashed 9.0.9 flawlessly, but the device still not booting (white LED on and nothing else).

                      I also tried to (fast)boot to TWRP.img, but same result : white LED and nothing else.

                      So the device is not "bricked" since I can access fastboot mode, but I can't manage to boot into anything else...

                      LakotaubpL 1 Reply Last reply Reply Quote 0
                      • LakotaubpL Offline
                        Lakotaubp @Reynald
                        last edited by

                        @reynald TWRP wipe and format to ext4 data, cache and system as on OP3/5 will that not clear it enough to just run the UBports installer?

                        1 Reply Last reply Reply Quote 0
                        • R Offline
                          Reynald
                          last edited by

                          I just reflashed the device with Android 9.0.8 with MSM Download, so Android 9 is running OK.

                          Switched to developper mode, unlocked, and then ubports-installer (0.8.8) says "Your device sdm845 is not supported".

                          On this page https://devices.ubuntu-touch.io/device/enchilada/ it's said this device sdm845 is supported, so what???

                          1 Reply Last reply Reply Quote 1
                          • LakotaubpL Offline
                            Lakotaubp
                            last edited by

                            @reynald Sorry I have no direct experience of the OP6 does this this help at all https://forums.ubports.com/topic/5715/restore-bricked-oneplus-6t-on-linux
                            Don't know if anyone here could help https://t.me/WelcomePlus our install group, think you need someone with direct knowledge. USB debugging, MTP transfer and all the other stuff is on in the android side. Just trying to think of stuff.

                            R 1 Reply Last reply Reply Quote 0
                            • R Offline
                              Reynald @Lakotaubp
                              last edited by Reynald

                              @lakotaubp OK, I managed to configure Android 9 and start ubports-installer.

                              The new problem is: ubports-installer recognize the phone, downloads files, and the 9/12 file has bad checksum and the whole thing fails:

                              error: download error: Error: Error: Checksum mismatch on file /home/reynald/.cache/ubports/enchilada/Ubuntu Touch/boot-caf5011e14b7d983ea9f2384ef2fc43c4937bbd0006b30ff1aa65c87ae2ef8ee.tar.xz

                              I will make a new post for this issue

                              aasamiA 1 Reply Last reply Reply Quote 1
                              • aasamiA Offline
                                aasami @Reynald
                                last edited by

                                @reynald
                                Try using ubports-installer 0.8.9_beta1
                                It worked for me with OP6 and OP6T.
                                Newer versions 0.9.0_beta1 and 0.9.1_beta1 doesn't work either.

                                1 Reply Last reply Reply Quote 1
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