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    Oneplus 6 bricked on fastboot mode

    Oneplus 6/6T
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    • R
      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 ๐Ÿ˜•

      MrT10001 1 Reply Last reply Reply Quote 1
      • MrT10001
        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
          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...

          MrT10001 1 Reply Last reply Reply Quote 0
          • MrT10001
            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
              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...

              MrT10001 1 Reply Last reply Reply Quote 0
              • MrT10001
                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
                  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
                    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...

                    Lakotaubp 1 Reply Last reply Reply Quote 0
                    • Lakotaubp
                      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
                        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
                        • Lakotaubp
                          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
                            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

                            aasami 1 Reply Last reply Reply Quote 1
                            • aasami
                              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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