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    Unbrick Voxl2

    Ask your questions right here!
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    • C
      CJ
      last edited by

      Hi,
      I'm unable to adb shell into the drone (Voxl2 Starling). So I've tried to flash the drone using fastboot. The flashing is successful but it cannot adb into the drone after restart the drone. The error is no devices/emulators found.

      Then, I try the qdl method and the following error is shown. Pls advise how to unbrick the drone.

      Screenshot from 2023-10-23 17-27-59.png

      C 1 Reply Last reply Reply Quote 0
      • C
        CJ @CJ
        last edited by

        Hi ModalAI team,

        Any help?

        tomT 1 Reply Last reply Reply Quote 0
        • tomT
          tom admin @CJ
          last edited by

          @CJ I haven't seen that I/O error before, perhaps try a different USB port / cable?

          C 2 Replies Last reply Reply Quote 0
          • wilkinsafW
            wilkinsaf ModalAI Team
            last edited by

            Did you install QDL from the snap store? if so, this might be your issue

            C 2 Replies Last reply Reply Quote 0
            • C
              CJ @tom
              last edited by

              @tom I've tried with different usb cables. But the same error message appears.

              1 Reply Last reply Reply Quote 0
              • C
                CJ @wilkinsaf
                last edited by

                This post is deleted!
                1 Reply Last reply Reply Quote 0
                • C
                  CJ @wilkinsaf
                  last edited by

                  @wilkinsaf Yes, I've download from snap store. Thanks for your tips. I'll try to download using git clone.

                  C 1 Reply Last reply Reply Quote 0
                  • C
                    CJ @CJ
                    last edited by

                    @CJ said in Unbrick Voxl2:

                    @wilkinsaf Yes, I've download from snap store. Thanks for your tips. I'll try to download using git clone.

                    The git clone version works but still unable to adb to the drone after successfully flashed.

                    1 Reply Last reply Reply Quote 0
                    • C
                      CJ @tom
                      last edited by CJ

                      @tom After I've flashed the drone, I'm not able to adb.

                      The usb connection shows as fastboot (see image below) instead of

                      Bus 001 Device 022: ID 05c6:901d Qualcomm, Inc. KONA-QRD _SN:21217FEB

                      Screenshot from 2023-10-30 11-26-26.png

                      Screenshot from 2023-10-30 11-42-48.png

                      Can you advise how to fix this?

                      C tomT 2 Replies Last reply Reply Quote 0
                      • C
                        CJ @CJ
                        last edited by

                        This post is deleted!
                        1 Reply Last reply Reply Quote 0
                        • tomT
                          tom admin @CJ
                          last edited by

                          @CJ That may be okay, I would try forcing the voxl2 into fastboot using the SW2 button as seen here: https://www.youtube.com/watch?v=IM3PnW7cipQ

                          then flashing the latest SDK release

                          C 1 Reply Last reply Reply Quote 0
                          • C
                            CJ @tom
                            last edited by CJ

                            @tom Hi, I've completed the flashing of latest SDK release. But I'm not able to adb shell into the drone.

                            Screenshot from 2023-10-31 09-49-47.png

                            The condition remains the same even after I did a power cycle, adb kill-server and adb start-server. Pls help.

                            tomT 1 Reply Last reply Reply Quote 0
                            • tomT
                              tom admin @CJ
                              last edited by

                              @CJ What operating system are you running? Are you using a virtual machine? I haven't seen this error before myself

                              C 1 Reply Last reply Reply Quote 0
                              • C
                                CJ @tom
                                last edited by

                                @tom Hi Tom,
                                The OS is ubuntu 22.04 and not on virtual machine.
                                It seems like it cannot come out of fastboot mode and waiting for adb connection.

                                tomT 1 Reply Last reply Reply Quote 0
                                • tomT
                                  tom admin @CJ
                                  last edited by

                                  @CJ After rebooting, what do you see with lsusb?

                                  C 1 Reply Last reply Reply Quote 0
                                  • C
                                    CJ @tom
                                    last edited by CJ

                                    @tom Pls see the image below. The Google Inc.... (fastboot) is the drone usb.

                                    Screenshot from 2023-11-04 09-57-19.png

                                    tomT 1 Reply Last reply Reply Quote 0
                                    • tomT
                                      tom admin @CJ
                                      last edited by

                                      @CJ If another QDL flash doesn't solve it, this might require an RMA for us to investigate: https://www.modalai.com/pages/rma

                                      C 1 Reply Last reply Reply Quote 0
                                      • C
                                        CJ @tom
                                        last edited by

                                        @tom What will be the likely cause for the drone not getting out of fastboot mode?

                                        tomT 1 Reply Last reply Reply Quote 0
                                        • tomT
                                          tom admin @CJ
                                          last edited by

                                          @CJ Unkown. Were you ever able to QDL successfully?

                                          C 1 Reply Last reply Reply Quote 0
                                          • C
                                            CJ @tom
                                            last edited by CJ

                                            @tom Yes, the QDL is successful.

                                            Screenshot from 2023-11-07 10-41-41.png

                                            And installing the SDK is also successful but it just wait for adb interface to be up, which the usb is still in fastboot mode after power cycle.
                                            Screenshot from 2023-11-07 10-48-51.png

                                            Screenshot from 2023-11-07 10-49-23.png

                                            tomT 1 Reply Last reply Reply Quote 0
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