Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Collapse
Brand Logo

ModalAI Forum

  1. ModalAI Support Forum
  2. Ask your questions right here!
  3. QDL device not connected

QDL device not connected

Scheduled Pinned Locked Moved Ask your questions right here!
7 Posts 3 Posters 1.1k Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • W Offline
    W Offline
    will.huang.oksi
    Contributor
    wrote on last edited by
    #1

    To whom it may concern,

    following this instruction to https://docs.modalai.com/voxl2-unbricking/

    slide the SW2 switch into the ON position,

    26feb7e9-e497-4cb4-89be-ffeec74306e0-image.png

    but in QDL Tool, it shows QDL device not connected.

    c3679163-9bb1-4e6d-a8a0-624623e7bf36-image.png

    I have confirmed that the USB-C cable works with other VOXL devices.

    Any suggestions or anything I missed?

    Thank you for your precious time on this.

    W 1 Reply Last reply
    0
    • W will.huang.oksi

      To whom it may concern,

      following this instruction to https://docs.modalai.com/voxl2-unbricking/

      slide the SW2 switch into the ON position,

      26feb7e9-e497-4cb4-89be-ffeec74306e0-image.png

      but in QDL Tool, it shows QDL device not connected.

      c3679163-9bb1-4e6d-a8a0-624623e7bf36-image.png

      I have confirmed that the USB-C cable works with other VOXL devices.

      Any suggestions or anything I missed?

      Thank you for your precious time on this.

      W Offline
      W Offline
      will.huang.oksi
      Contributor
      wrote on last edited by
      #2

      Hello,
      if you need any other information for this question,
      please don't hesitate to let me know.
      Thank you for helping!

      W 1 Reply Last reply
      0
      • W will.huang.oksi

        Hello,
        if you need any other information for this question,
        please don't hesitate to let me know.
        Thank you for helping!

        W Offline
        W Offline
        will.huang.oksi
        Contributor
        wrote on last edited by
        #3

        Hello ModalAI Team,
        If you need any additional information regarding the issue I’m currently experiencing, please don’t hesitate to let me know.
        I appreciate your time and support on this matter.

        W 1 Reply Last reply
        0
        • W will.huang.oksi

          Hello ModalAI Team,
          If you need any additional information regarding the issue I’m currently experiencing, please don’t hesitate to let me know.
          I appreciate your time and support on this matter.

          W Offline
          W Offline
          will.huang.oksi
          Contributor
          wrote on last edited by
          #4

          Hello ModalAI Team,
          Here is the HW and SDK info

          • ModalAI Flight Deck M0054
          • VOXL system image 1.8.02-M0054-14.1a-perf
          • VOXL suite 1.4.1

          Thank you.

          Z N 2 Replies Last reply
          0
          • W will.huang.oksi

            Hello ModalAI Team,
            Here is the HW and SDK info

            • ModalAI Flight Deck M0054
            • VOXL system image 1.8.02-M0054-14.1a-perf
            • VOXL suite 1.4.1

            Thank you.

            Z Offline
            Z Offline
            ZuraNeb
            Contributor
            wrote on last edited by ZuraNeb
            #5

            @will-huang-oksi

            Hello, thank you for your patience.

            Can you run the lsusb command and let us know the output? (As the voxl is plugged in)

            1 Reply Last reply
            0
            • W will.huang.oksi

              Hello ModalAI Team,
              Here is the HW and SDK info

              • ModalAI Flight Deck M0054
              • VOXL system image 1.8.02-M0054-14.1a-perf
              • VOXL suite 1.4.1

              Thank you.

              N Offline
              N Offline
              Nathan Raras
              ModalAI Team
              wrote on last edited by
              #6

              Hello @will-huang-oksi,

              In response to @ZuraNeb as well, when running "lsusb" in your terminal with the device powered on and connected over USB, you should see the following device:
              Screenshot from 2025-06-02 11-50-13.png

              If not, I'd recommend filing an RMA and we can further debug the issue: https://www.modalai.com/pages/rma

              W 1 Reply Last reply
              0
              • N Nathan Raras

                Hello @will-huang-oksi,

                In response to @ZuraNeb as well, when running "lsusb" in your terminal with the device powered on and connected over USB, you should see the following device:
                Screenshot from 2025-06-02 11-50-13.png

                If not, I'd recommend filing an RMA and we can further debug the issue: https://www.modalai.com/pages/rma

                W Offline
                W Offline
                will.huang.oksi
                Contributor
                wrote on last edited by
                #7

                Hello @Nathan-Raras and @Nathan-Raras ,

                I don't see any Qualcomm device with running "lsusb".
                I also have confirmed that the USB-C cable is able to access another VOXL device.
                So I have submitted the RMA
                d45c5737-8bf3-4c8b-9e7d-851acbfe82a8-image.png

                Please let me know if any questions or suggestions.
                Thank you very much for supporting.

                1 Reply Last reply
                0

                Hello! It looks like you're interested in this conversation, but you don't have an account yet.

                Getting fed up of having to scroll through the same posts each visit? When you register for an account, you'll always come back to exactly where you were before, and choose to be notified of new replies (either via email, or push notification). You'll also be able to save bookmarks and upvote posts to show your appreciation to other community members.

                With your input, this post could be even better 💗

                Register Login
                Reply
                • Reply as topic
                Log in to reply
                • Oldest to Newest
                • Newest to Oldest
                • Most Votes


                ModalAI
                Categories Recent Tags ModalAI.com Docs
                © 2026 ModalAI® · Accelerating autonomy for smaller, smarter, safer drones · Powered by NodeBB
                • Login

                • Don't have an account? Register

                • Login or register to search.
                • First post
                  Last post
                0
                • Categories
                • Recent
                • Tags
                • Popular
                • Users
                • Groups