• Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Register
  • Login
ModalAI Forum
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
    • Register
    • Login

    Unable to unbrick ModalAI Voxl m500

    Ask your questions right here!
    4
    7
    470
    Loading More Posts
    • 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.
    • A
      ashwin-umdlife
      last edited by 26 Oct 2021, 11:39

      Hello there,

      One of our ModalAI drones is bricked and we are unable adb shell into the device. Following the instruction to unbrick given here, I am unable to find device upon sudo fastboot devices.

      Here are the instructions we followed to unbrick the device:

      • Power off the VOXL
      • Detach VOXL USB cable (to ensure USB is not supplying any power VOXL)
      • Attach the USB Expander and Debug Add-On board
      • Ensure the FASTBOOT labeled switch is set to on
      • Ensure the EMERG BOOT labeled switch is set to off
        NOTE: if your board is missing the EMERG BOOT switch, this is OK as its default un-populated state is OFF
      • Power on the VOXL
      • Reattach VOXL USB cable
      • After VOXL boots up (about 5 seconds), set the FASTBOOT back to off

      Here is a video of the attempt https://youtu.be/BDEEefeVZ20

      Please let us know if we have missed any steps. Thank you.

      Ashwin Sushil

      1 Reply Last reply Reply Quote 0
      • M
        modaltb ModalAI Team
        last edited by 26 Oct 2021, 21:50

        Hi @ashwin-umdlife ,

        Sorry this post is shown as 'deleted' for some reason, testing a response.

        1 Reply Last reply Reply Quote 0
        • M
          modaltb ModalAI Team
          last edited by 26 Oct 2021, 22:04

          Hi @ashwin-umdlife ,

          I un-deleted this post, I'm not sure if you meant to delete but was asked from our contact email to look at this post.

          OK, I think we have some timing issues possibly happening here.

          Let's work through this and see if we need to update our documentation.... there's a couple scenarios to work through so it's a little tricky.

          The idea here is that we want to mimic "holding down the volume-down key while powering on a phone and letting go right after you power on" and then run the command.

          So, let's try this:

          • have m500 powered off
          • have fastboot switch turned ON
          • have USB cable connected to m500, not the host (because VOXL can get a little power from USB, but not enough to boot)
          • have your terminal open and ready with sudo fastboot devices command waiting

          Now:

          • plug USB power in
          • power on m500
          • turn fastboot switch off and quickly run the command (hit ENTER on the terminal that has the command waiting)

          Repeat this several times if possible. If we ever detect a device in fastboot mode then we can next attempt to update the system image.

          1 Reply Last reply Reply Quote 0
          • A
            ashwin-umdlife
            last edited by ashwin-umdlife 27 Oct 2021, 12:53 27 Oct 2021, 12:49

            @modaltb I deleted this post because I figure out the usb should be connected to the voxl board and not the expansion board. Thank you making this clear. I see that there is a video made by your team explaining the unbricking procedure. It will be great if you could add it in the office modalai unbricking documentation.

            1 Reply Last reply Reply Quote 0
            • R
              Roman Rempel
              last edited by 28 Oct 2021, 07:08

              @modaltb
              Hey!
              i also try to unbrick my VOXL
              adb - does not work
              but the fastboot sees the device
              Tell me how to properly flash system image using fastboot

              1 Reply Last reply Reply Quote 0
              • C
                Chad Sweet ModalAI Team
                last edited by 28 Oct 2021, 14:19

                Can you please see try this post? https://forum.modalai.com/topic/525/voxl-adb-or-wi-fi-no-longer-communicating

                A 1 Reply Last reply 28 Oct 2021, 14:54 Reply Quote 0
                • A
                  ashwin-umdlife @Chad Sweet
                  last edited by 28 Oct 2021, 14:54

                  @Chad-Sweet I think we are all commenting on the wrong post here. The issue of this post was solved by connecting to the appropriate usb cable.

                  However, @Roman-Rempel I guess you are having similar problem as in this post https://forum.modalai.com/topic/520/voxl-stuck-in-waiting-after-unbricking/3 ?

                  1 Reply Last reply Reply Quote 0
                  1 out of 7
                  • First post
                    1/7
                    Last post
                  Powered by NodeBB | Contributors