Flight controller stuck in dfu mode. get stuck at "initiating reboot to bootloader.
Flight controller stuck in dfu mode Oct 12, 2020 · When it is connected to my pc the flight controller has the correct LEDs lighting up as you would expect but then nothing happens. Connect to Betaflight as normal, go to the CLI, and type DFU When you press enter, it should reboot into DFU mode. Apr 3, 2022 · If you use hot air and carefully remove the button then it might help with the DFU issue. 16385)”，click ”Reinstall Driver“ ⑤Wait until load successfully We would like to show you a description here but the site won’t allow us. Reconnect all and run the ImpulseRC Driver Fixer app. Hopefully that will then properly get it into DFU mode. If it still goes into dfu mode then I would expect that the boot button on the flight controller is maybe the culprit. Unable to flash firmwareget stuck at "initiating reboot to bootloader" and nothing happen. May 14, 2023 · Describe the bug I am running Windows 11 Pro and can not get my flight controller to connect using 10. They were not being opened in DFU mode. This was true in INAV and in Betaflight. Its a central website to keep track of all your support requests. And no the bootloader button is not pressed:) To Repro Jul 7, 2025 · I have been having trouble upgrading firmware in 2 Speedy Bee F405 Wing Mini and 1 Speedy Bee F405 Wing APP Flight Controllers. When you plug and unplug the FC in DFU mode, the additional device that appears is the device for your flight controller. 9 the port Aug 8, 2023 · IntoFPV Forum Hardware Discussion Flight Controller Thread Rating: 1 2 3 4 5 Threaded Mode In this guide I explain and show you how to flash ANY flight controller with Betaflight. If your Receiver have boot pads, bridge them together with solder. If your Receiver has a button, use an alligator clip to keep the button pressed. This will work also with Butterflight. 67 and newer. 5. Nov 2, 2025 · Having trouble connecting your FC to a computer, or flashing FC firmware? Very often it's an issue with flight controller driver. So I recently purchased most of my build from Banggood and the rest from DJI. So, you need Betaflight firmware version 3. Or, your flight controller can be recognized but when you try to connect you get the error above. This is a straightforward process in Configurator versions 0. The "No reboot sequence" checkbox has no effect as the device will automatically be detected when already in bootloader mode Jul 19, 2023 · Are you using the boot button to get it into DFU mode before flashing? I ask because you say "when I execute Flash FIRMWARE, the "DFU SMT32 Bootloader" populates the device port. Can't flash new firmware because your flight controller won't go into DFU mode? Luckily there's potentially a fairly simple solution, that's worth trying if After approximately 2 seconds, you can release the button to put the flight controller into DFU mode. Jan 5, 2017 · Nice and simple. Try reflashing it in DFU mode. 0 (697943b). Nov 14, 2021 · The flasher by default tries to reboot the flight controller into DFU mode on its own, even if it already is in DFU mode. 788 to install USB drivers May 3, 2020 · Then let Windows install default drivers for VCP mode and use Zadig to force the DFU mode to use WinUSB. There are three tools that can be used to flash the PX4 bootloader: Betaflight Configurator, dfu-util command line tool, or the graphical dfuse (Windows only). 2K subscribers Subscribe If you are certain they are connected, and certain it isn't in DFU mode, try this way. Make changes to tabs, reboot, back to load DFU. " Select " Let me pick from a list of available drivers on my computer. FC stuck in DFU mode randomly? Question: I've been flying my quad for about 3 weeks now. Dec 18, 2024 · 4. Feb 21, 2023 · If you’re an FPV drone pilot using Betaflight as your flight controller, you understand the excitement and thrill of flying your drone. This video also helps if you happen to have broken your boot button Sep 9, 2025 · Fix Betaflight flight controller connection issues. 4K subscribers Subscribed Apr 8, 2018 · Is anything that is sending data to the flight controller on an UART connected and powered up when connected through USB? If so, disconnect it, or power it down, it is possibly causing DFU mode to bind to the UART in question, and stopping to listen on USB. At the same time, you will observe the following situation in the computer's dev Here's a step-by-step guide on how to update your flight controller to the latest version. i mean it would have to be shorting out if it’s going into dfu mode. the DFU buttons are not stuck so i don’t know how its putting itself into DFU mode. When the driver works well with the FC board, you could find the COM in the Windows Device Manager, as shown below. In this video, we will be showing you how to boot your drone into DFU mode in order to reflash th We would like to show you a description here but the site won’t allow us. This process can often revive a bricked flight controller. If, after following the above step, Betaflight does not recognize the flight controller in DFU mode, please open the device manager on your computer to check the status of the flight controller's drivers. Everything in Betaflight is set correct, I get RC and goggles Sep 9, 2016 · I am doing a build for the first time using a LUX Flight Controller, i was able to set it up last night in cleanflight, i did the configuration, setup the modes, even calibrated the ESC's. Maybe there’s a way to check with a multimeter if it’s shorting out. Step-by-step solutions for USB, drivers, DFU mode, firmware, and serial port errors. OmnibusF4 SD or Kakute F7). This may happen if you purchased a board from China and it's running an out of date version of Betaflight or if you You can always reload the firmware via the DFU (device firmware update) mode. I finally solved the issue. Follow the directions in the "Recovery / Lost communication" section of the Firmware Flasher tab. Jun 21, 2022 · When connecting in non-DFU mode the flight controller connects as a COM Port device, not as a native USB device. Device Manager registers the Flight Controller as Betaflight STM32F7x2 in COM 3. 7600. Load Betaflight and DFU loader comes up. When I open Configurator 10. exe ②Open zadig，choose “Options”，click “List all devices” ③Choose “STM32 BOOTLOADER” ④Change the driver target to “WinUSB (v6. Flight controller stuck in DFU Mode Question? I was trying to flash ardupilot on my speedybee f4v3 , I used to stm32 cube programmer , due to some problem I thought of flashing inav instead of ardupilot , so i used the full chup erase feature in stm 32 , ( I was in DFU Mode) , now after erasing i unplugged the FC . anyone have an idea? This is my series the Basics of Betaflight. . Voltage Calibration: May 28, 2017 · Reasons for Bricked FC Actually the word “brick” is a wrong choice, you can’t technically brick a flight controller. In this episode I'm going to show you how to put your flight controller into DFU mode Aug 1, 2021 · Remember me IntoFPV Forum Hardware Discussion Flight Controller Thread Rating: 0 Vote (s) - 0 Average 1 2 3 4 5 Threaded Mode Help FC always in DFU rockford007 Member Also, unplug the Flight Controller from your computer. If you power on the FC after holding down the boot button, the FC in DFU mode still cannot be recognized. Step Two: Right-click on the FC device, then select " Update drivers. Flight controller freeze when booting Make sure you have it flashed with right target/firmware. Reflash Firmware: Enter DFU Mode: If the flight controller is unresponsive, enter DFU mode to reflash the firmware. It's not even recognized in windows at all, as if it wasn't plugged in. 95% of the causes are: Flashed wrong firmware target to the flight controller, e. 3 RC4 my h743 mamba FC randomly forgets its whole config and sometimes when i try to connect to it it is in DFU mode. Dec 23, 2021 · You also need to make sure that you are using a data cable and not a charge-only cable. 1. (1) Make FC enter DFU mode (please refer to the following article: How to flash firmware for a bricked flight controller?）. If your flight controller gets bricked, it'll not be able to power up properly. The issues we have are more like “locking ourselves out”. Sep 29, 2017 · If you can access betaflight and flash, why do you want to fix your driver? Nov 7, 2025 · Learn how to flash Betaflight firmware on FPV drone flight controller in this tutorial, covering build options and troubleshooting tips. In this case, flash firmware in DFU mode is needed. Updating 4. After update, exit DFU. So you will see it listed under the "Ports (COM & LPT)" node when connected as a normal (non-DFU mode) device. Download the ImpulseRC Driver Fixer app. If you hold down the boot button on the FC while plugging in a USB cable, is your FC then detected by Windows in DFU mode? yes I have already tried with other cables and usb ports, even if I hold down the boot key, nothing changes. As long as you don't rip the pads by overheating, you can short them in the future (basically the same as a button press) when you need to enter DFU mode. bf seems to bug and nothing work anymore until i unplug the kwad and close it. Selecting correct FC Firmware Target :Before you start, you'll need to know which firmware you need for your flight controller. If they're "talking" to the flight controller they can interfere with entering DFU. " I take that to mean you see the DFU bootloader pop up in device manager after you hit Flash Firmware (more importantly, DFU isn't there before you hit flash). Also make sure you don't have any connected receivers or GPS modules powered (or disconnect them). Prepare the receiver for bootloader mode. In this video, we will be showing you how to boot your drone into DFU mode in order to reflash th Jun 8, 2025 · 2. This driver only works for Beebrain FC etc. Example Receiver with Boot Pad Jan 14, 2022 · Verify that the flight controller is detected by the computer. Oct 18, 2020 · Hi All I seem to have my maket f504-se stuck in bootloader. Disconnect USB from the drone, shut down Betaflight (assuming Betaflight is being used, but it should work for other flight controller firmware). Most flight controllers have a 'boot' button or pins which are used to enter DFU mode. However, one of the most frustrating experiences you may face is when your drone refuses to connect to Betaflight. Go again to the apple logo in the top left corner -> 'About this Mac' -> 'System Report' -> 'Hardware' -> 'USB'. Apr 11, 2022 · Describe the bug On bF 4. 3. flash CC3D firmware to a Naze32 board On some boards where USB port is shared with UART1, and if you disabled MSP Data on UART1 Sometimes things can go wrong with the Betaflight firmware. This can prevent you from accessing important features and functions, limiting your ability to fly with confidence and precision. There are two ways to flash firmware in DFU mode, via the SpeedyB Apr 22, 2023 · It's the gold coloured micro button on the top of the FC near the edge of the board. Cannot enter the DFU mode When you flash your firmware，your BF cannot recognize the mode ①Download zadig zadig-2. Sometimes things can go wrong with the Betaflight firmware. Some newer boards with full USB support must be flashed in USB DFU mode. Jul 2, 2024 · When flashing Betaflight/INAV firmware or Ardupilot/PX4 Bootloader, the flight controller needs to enter DFU mode. This tutorial hopefully can help you fix it in a few simple steps. It is a good practice to type CLI “defaults” after every flashing to erase fragment of data/settings. " Step Three: Flight controller cannot go into DFU/Bootloader mode | Here's how! I had the Moblite7 HDZero that I wanted to fly but for some strange reason I just couldnt get the Flight Controller (FC) into DFU Aug 23, 2021 · Flashing a Flight Controller and using the DFU/Boot button to rescue a 'bricked' FC Painless360 189K subscribers Subscribe The last resort if you can't get your flight controller into DFU mode for flashing - YouTube Solution: Disconnect the radioDrone always in DFU mode, Won't connect to Betaflight (Unrecoverable failure of serial connection) Quad had no problems. Quad starts if exit betaflight, plugged in, but reboot puts it back in Boot or DFU mode. Ensure that your user (or sudo, but that complicates things) is a member of the "dialout" group. DFU mode can’t be bricked. Tried that already, still detected as "Guillemot STM DFU Device" under Sound, video and game controllers. Have to exit DFU again to load into Betaflight . true"BOOT Button: Press and hold BOOT button and power the FC on at the same time will force the FC to enter DFU mode, this is for firmware flashing when the FC gets bricked. Last resort, select the driver manually However if that still does not work when it comes to flashing firmware in DFU mode, the last solution is to simply select the correct driver yourself via windows device manager with your flight controller connected in bootloader mode. Connected to it via DFU on betaflight and flashed t Jul 8, 2024 · So i have managed to narrow down the issue to the FC randomly putting itself in DFU mode. Did I Brick My Flight Controller? Recovery? DFU? Bootloader? - FPV Questions Joshua Bardwell Livestream Clips 31. g. " Click on " Browse my computer for drivers. I went into BF to adjust my throttle idle speed, saved and rebooted and now my FC is stuck in DFU mode? not sure what is going on here. I had to open ZADIG Zadig 2. DFU Driver If you want to reflash the FC board via DUF mode, you will find the DFU driver in the Windows Device Manager. Both methods produce the same problem. Put the flight controller into DFU mode by using the CLI and type bl or hold down the bootloader button and plug it in. PX4 Bootloader Flashing onto Betaflight Systems This page documents how to flash the PX4 bootloader onto boards that are already flashed with Betaflight (e. Targets correct. This is a software problem. Entering DFU Mode To put the board into DFU mode, simply hold the BOOT button pressed and then connect it to the PC using a USB cable to power up the board. Can't Get Into DFU To Flash Flight Controller? Betaflight Won't Connect To Betalfight? - FPV Qs Joshua Bardwell Livestream Clips 26. " Are you sure there aren't any short circuit on the FC/ESC? Also you don't need LiPo to flash/setup the FC. sometimes this happens when i power it on, other times it happens about 2 minutes after power on. Generally you can just enter DFU mode by pushing the button or bridging the boot pins as you plug the USB in (while the Rotorflight Configurator is open). Need help with my FC board, it is stuck in DFU/Bootloader mode? (I am from the Cinematic Drone World) Help! Hey! My name is Manny and I've just got into FPV after getting a bit bored from flying my Mavics and Phantoms. DO NOT try to use a diff or dump from other version. Tried using the boot button on the flight controller to boot it into DFU mode but still nothing. Apr 8, 2019 · Use the boot button to put it in DFU mode. SpeedyBee Firmware Compatibility: Ensure the firmware version is compatible with your specific flight controller model. In this video, I show you how to fix or force DFU mode on any Betaflight Board. 5. Only members of this group are allowed to access external devices. If your Receiver only has one Boot pad, connect it to a Ground pad. Jul 25, 2021 · Do you have any other flight controllers or quads that work on your computer? If not it will be hard to know if there is something with your computer or the FC in question. 9. Connected to Zadig and installed the driver. Attention: Do NOT use the CP210x Driver. Kill that service. In this The UMT support portal where you can get help with your order, or drone products. 0 or greater installed on your Flight Controller for that "Activate Boot Loaded / DFU" button to appear in Betaflight Configurator When DFU hijacking occurs, the Betaflight Configurator will not recognize the flight controller that is in DFU mode. From linux - modemmanager might be an issue. Just got it all wired up, ready to program. Installing the DFU Driver (Windows) The […] Dec 31, 2023 · Learn how to enter DFU mode on your flight controller for Betaflight and iNav firmware updates using CLI commands or the boot button in this tutorial. It will be a complete guide while keeping things simple. Join this channel to get access to perks: / @diydot3d betaflight,betaflight failed to open serial port,stuck in dfu mode,firmware update,betaflight firmware,betaflight firmware update failed to There is another way that has worked for me in the past, when unable to enter DFU mode. The standard flashing procedure should work successfully with the caveat of some platform specific problems as noted below. Or, your flight controller can't enter DFU mode even if you press and hold the BOOT button when powering on the flight controller. I personally would risk taking the boot button clear off the flight controller.