Order #729284 - Iflight F411pro - No power to my aio after flashing

Help Unmanned Tech
2

Hi there,

Sorry to hear you’re having trouble with your Iflight F411pro after flashing Betaflight 4.5.1. That blinking sequence followed by no lights often indicates an issue with the firmware flash or the board not fully booting. Let’s try a few things to figure it out.

Could you please provide a bit more information?

  1. Exact Betaflight Target: Which specific target did you select in the Betaflight Configurator? For the F411 Pro, it should likely be something like IFLIGHT_F411_PRO. Using the wrong target is a very common cause of this issue. Please double-check the target name you used.
  2. Flash Process: Did the Betaflight Configurator report that the flash was successful? Did you have “Full chip erase” selected before flashing?
  3. Power Source: How are you powering the board when you see this issue (USB only, battery, or both)?
  4. Computer Recognition: When you plug the FC into your computer via USB now, does the computer make a sound? Does anything show up in the Betaflight Configurator’s port list, even if it doesn’t connect?
  5. DFU Mode: Can you still get the board into DFU mode? To do this:
    • Unplug the FC.
    • Press and hold the boot button on the FC.
    • While still holding the boot button, plug the USB cable back into the computer.
    • Once plugged in, you can release the boot button.
    • Check the Betaflight Configurator. Does it show “DFU” in the top right corner where the COM port usually is?

Troubleshooting Steps to Try:

  1. Verify Target & Reflash:
    • Confirm the exact correct Betaflight target for your specific board revision from iFlight’s documentation or website.
    • If you can get into DFU mode (see step 5 above), try flashing again.
    • Crucially: Make sure you select “Full chip erase” this time.
    • Use the confirmed correct firmware target (.hex file) for BF 4.5.1.
  2. Drivers: Ensure you have the correct STM32 VCP and DFU drivers installed. Running the ImpulseRC Driver Fixer tool is often the easiest way to sort out driver issues. (Fix any STM32 DFU Drivers issues when flashing Betaflight/Cleanflight firmware)
  3. USB Cable/Port: Try a different USB cable (one known to handle data, not just charging) and a different USB port on your computer.
  4. Betaflight Configurator: Ensure you are using the latest compatible version of the Betaflight Configurator (currently 10.10.0 should be fine for BF 4.5.x).

Please try getting it into DFU mode first, as that’s key to being able to reflash if the firmware is corrupted or incorrect. Let us know the answers to the questions above and how you get on with these steps!

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