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

ModalAI Forum

  1. ModalAI Support Forum
  2. VOXL Compute & Autopilot
  3. VOXL 2
  4. Reflashing Voxl 2 Sentinel Drone

Reflashing Voxl 2 Sentinel Drone

Scheduled Pinned Locked Moved VOXL 2
12 Posts 4 Posters 1.7k Views 2 Watching
  • 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.
  • William HuangW Offline
    William HuangW Offline
    William Huang
    wrote on last edited by
    #1

    Today I accidently entered rm -rf * in the home directory on the Voxl 2 Sentinel drone, removing all the directories. I tried following the steps up to https://docs.modalai.com/voxl2-unbricking/, but when I try running the command "$ sudo qdl --debug --storage ufs --include . prog_firehose_ddr.elf rawprogram_unsparse0.xml rawprogram1.xml rawprogram2.xml rawprogram3.xml rawprogram4.xml rawprogram5.xml patch0.xml patch1.xml patch2.xml patch3.xml patch4.xml patch5.xml" it just outputs "Waiting for EDL device". I was wondering how I should proceed.6

    tomT 2 Replies Last reply
    0
    • William HuangW William Huang

      Today I accidently entered rm -rf * in the home directory on the Voxl 2 Sentinel drone, removing all the directories. I tried following the steps up to https://docs.modalai.com/voxl2-unbricking/, but when I try running the command "$ sudo qdl --debug --storage ufs --include . prog_firehose_ddr.elf rawprogram_unsparse0.xml rawprogram1.xml rawprogram2.xml rawprogram3.xml rawprogram4.xml rawprogram5.xml patch0.xml patch1.xml patch2.xml patch3.xml patch4.xml patch5.xml" it just outputs "Waiting for EDL device". I was wondering how I should proceed.6

      tomT Offline
      tomT Offline
      tom
      admin
      wrote on last edited by
      #2

      @William-Huang You shouldn't have to follow the unbricking procedure as you're not really in a "bricked" state.

      Just follow these steps to flash the latest SDK release: https://docs.modalai.com/flash-system-image/#flashing-a-voxl-sdk-release

      1 Reply Last reply
      0
      • William HuangW William Huang

        Today I accidently entered rm -rf * in the home directory on the Voxl 2 Sentinel drone, removing all the directories. I tried following the steps up to https://docs.modalai.com/voxl2-unbricking/, but when I try running the command "$ sudo qdl --debug --storage ufs --include . prog_firehose_ddr.elf rawprogram_unsparse0.xml rawprogram1.xml rawprogram2.xml rawprogram3.xml rawprogram4.xml rawprogram5.xml patch0.xml patch1.xml patch2.xml patch3.xml patch4.xml patch5.xml" it just outputs "Waiting for EDL device". I was wondering how I should proceed.6

        tomT Offline
        tomT Offline
        tom
        admin
        wrote on last edited by
        #3

        @William-Huang You'll likely have to force it into fastboot if you have no ADB:

        Link Preview Image
        VOXL 2/VOXL2 Mini System Image

        ModalAI technical documentation for VOXL and VOXL 2 Companion Computers for PX4 and ArduPilot Obstacle Avoidance and GPS-denied navigation, assembled in the USA

        favicon

        ModalAI Technical Docs (docs.modalai.com)

        1 Reply Last reply
        0
        • William HuangW Offline
          William HuangW Offline
          William Huang
          wrote on last edited by
          #4

          Hi, I am currently trying the fastbook but I cannot find SW1 on the board. I see a SW3 that looks like the SW1 from the documentation. The board we are using is from this drone (https://www.modalai.com/products/voxl-2-flight-deck?variant=40503626039347). Also, when I plug in the power the light is red.

          tomT 2 Replies Last reply
          0
          • William HuangW William Huang

            Hi, I am currently trying the fastbook but I cannot find SW1 on the board. I see a SW3 that looks like the SW1 from the documentation. The board we are using is from this drone (https://www.modalai.com/products/voxl-2-flight-deck?variant=40503626039347). Also, when I plug in the power the light is red.

            tomT Offline
            tomT Offline
            tom
            admin
            wrote on last edited by
            #5

            @William-Huang There is only one button on the board, unsure whether it is labeled on the silkscreen or not

            1 Reply Last reply
            0
            • William HuangW William Huang

              Hi, I am currently trying the fastbook but I cannot find SW1 on the board. I see a SW3 that looks like the SW1 from the documentation. The board we are using is from this drone (https://www.modalai.com/products/voxl-2-flight-deck?variant=40503626039347). Also, when I plug in the power the light is red.

              tomT Offline
              tomT Offline
              tom
              admin
              wrote on last edited by
              #6

              @William-Huang The light being red is not good, I would make sure the power to the board is good

              M 1 Reply Last reply
              0
              • tomT tom

                @William-Huang The light being red is not good, I would make sure the power to the board is good

                M Offline
                M Offline
                mkriesel
                Regular
                wrote on last edited by
                #7

                @tom Hello, I am picking up this problem now and have some questions about what I should do for next steps.

                There are 2 boards in this stack and it seems slightly different than than the stock Voxl 2. On the top board there is a button labeled sw3. Pressing this button and power on does not seem to be enabling fastboot mode. the install.sh script just hangs and fastboot devices produces no results. There is a switch labled sw1 but this does not seem to do anything either and I can't seem to find what this does.

                What do you mean by "light being red is not good", what does this indicate? Power to the board seems fine. I'm using the stock cable an wall power adapter and everything seems to turn on fine and is supplying the correct power.

                Are there other things I can try or would this board need to be sent back for fixing

                thumbnail_image0.jpg

                M 1 Reply Last reply
                0
                • M mkriesel

                  @tom Hello, I am picking up this problem now and have some questions about what I should do for next steps.

                  There are 2 boards in this stack and it seems slightly different than than the stock Voxl 2. On the top board there is a button labeled sw3. Pressing this button and power on does not seem to be enabling fastboot mode. the install.sh script just hangs and fastboot devices produces no results. There is a switch labled sw1 but this does not seem to do anything either and I can't seem to find what this does.

                  What do you mean by "light being red is not good", what does this indicate? Power to the board seems fine. I'm using the stock cable an wall power adapter and everything seems to turn on fine and is supplying the correct power.

                  Are there other things I can try or would this board need to be sent back for fixing

                  thumbnail_image0.jpg

                  M Offline
                  M Offline
                  mkriesel
                  Regular
                  wrote on last edited by
                  #8

                  @mkriesel I got the green light now but there is still a problem, the 5G boaard has a button but the bottom 2 boards don't have any button, just the switch on the middle board, the one with the usb connector. I still cannot connect to it nor get fastboot working.

                  VinnyV 1 Reply Last reply
                  0
                  • M mkriesel

                    @mkriesel I got the green light now but there is still a problem, the 5G boaard has a button but the bottom 2 boards don't have any button, just the switch on the middle board, the one with the usb connector. I still cannot connect to it nor get fastboot working.

                    VinnyV Offline
                    VinnyV Offline
                    Vinny
                    ModalAI Team
                    wrote on last edited by
                    #9

                    Hi @mkriesel
                    What did you fix/change to get that LED to go green?
                    Red means one of three things:

                    1. Under voltage (less than 4.4V)
                    2. Over voltage (greater than 5.6V)
                    3. Downstream short circuit tripping the current limits

                    I am curious so that other forum users also learn about this and your steps to fix it.
                    Thanks!

                    M 1 Reply Last reply
                    0
                    • VinnyV Vinny

                      Hi @mkriesel
                      What did you fix/change to get that LED to go green?
                      Red means one of three things:

                      1. Under voltage (less than 4.4V)
                      2. Over voltage (greater than 5.6V)
                      3. Downstream short circuit tripping the current limits

                      I am curious so that other forum users also learn about this and your steps to fix it.
                      Thanks!

                      M Offline
                      M Offline
                      mkriesel
                      Regular
                      wrote on last edited by
                      #10

                      @Vinny It wasn't a power issue, I realized one of the boards in the stack wasn't connecting properly, so pretty simple to fix that.

                      I am still having the issue of actually getting it to work though, all of my attempts to get it into fastboot mode don't do anything and there doesn't seem to be a button on the board I can push and the switch doesn't seem to be helping. There is a button on the 5G Wireless board at the top, but this also does not seem to put it into fastboot mode. I also can't connect to it any other way, like just doing adb shell and no devices show for adb devices nor fastboot devices.

                      thumbnail_image0.jpg

                      VinnyV 1 Reply Last reply
                      0
                      • M mkriesel

                        @Vinny It wasn't a power issue, I realized one of the boards in the stack wasn't connecting properly, so pretty simple to fix that.

                        I am still having the issue of actually getting it to work though, all of my attempts to get it into fastboot mode don't do anything and there doesn't seem to be a button on the board I can push and the switch doesn't seem to be helping. There is a button on the 5G Wireless board at the top, but this also does not seem to put it into fastboot mode. I also can't connect to it any other way, like just doing adb shell and no devices show for adb devices nor fastboot devices.

                        thumbnail_image0.jpg

                        VinnyV Offline
                        VinnyV Offline
                        Vinny
                        ModalAI Team
                        wrote on last edited by Vinny
                        #11

                        Hi @mkriesel
                        Yes, The RB5 Flight Platform does unfortunately need a plug-in board, like the M0090 5G modem board you noted, to enter fastboot using the button.
                        That is SW3 as shown here:
                        edd1d9b6-c6dc-41bd-960a-e92ffead6852-image.png
                        The static slide switches you see on the RB5 Flight Main Board (M0052) is for eDL/QDL Emergency Download (unbricking) procedures. Can you please ensure the static switch SW2 is on the "OFF" position, as that can prevent your board from booting normally or from entering fastboot. I think I ight see in the picture that the switch is set to "ON" which will give you these issues. Hard to tell, the image is a little blurry when I zoom in.
                        This picture here shows an example of the "ON" notation on those switches (and you will not have SW1 as shown here): a8354715-c531-4c9c-873c-b01b346058ae-image.png

                        If this does not help, then we may need to pull in some software support (I am from HW team).

                        M 1 Reply Last reply
                        0
                        • VinnyV Vinny

                          Hi @mkriesel
                          Yes, The RB5 Flight Platform does unfortunately need a plug-in board, like the M0090 5G modem board you noted, to enter fastboot using the button.
                          That is SW3 as shown here:
                          edd1d9b6-c6dc-41bd-960a-e92ffead6852-image.png
                          The static slide switches you see on the RB5 Flight Main Board (M0052) is for eDL/QDL Emergency Download (unbricking) procedures. Can you please ensure the static switch SW2 is on the "OFF" position, as that can prevent your board from booting normally or from entering fastboot. I think I ight see in the picture that the switch is set to "ON" which will give you these issues. Hard to tell, the image is a little blurry when I zoom in.
                          This picture here shows an example of the "ON" notation on those switches (and you will not have SW1 as shown here): a8354715-c531-4c9c-873c-b01b346058ae-image.png

                          If this does not help, then we may need to pull in some software support (I am from HW team).

                          M Offline
                          M Offline
                          mkriesel
                          Regular
                          wrote on last edited by
                          #12

                          @Vinny I was able to get it in fastboot mode and flash it so things seem to be working now, switching to off and hitting the button solved it.

                          Thanks for all the help!

                          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

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