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Mini-HowTo Cleanflight firmware for STM32F3 based FCBs, Check First Post Please!! - Page 1018 - RC Groups
![All of a sudden BetaFlight: Failed to open serial port, when trying to repair ImpulseRC: the port 'COM7' does not exist. And I can see COM 7 in BetaFlight right now. FC All of a sudden BetaFlight: Failed to open serial port, when trying to repair ImpulseRC: the port 'COM7' does not exist. And I can see COM 7 in BetaFlight right now. FC](https://preview.redd.it/806jxpy9d7d41.jpg?auto=webp&s=f8a6f34a322976860eb606f5dfa90a5d2dc71e5d)
All of a sudden BetaFlight: Failed to open serial port, when trying to repair ImpulseRC: the port 'COM7' does not exist. And I can see COM 7 in BetaFlight right now. FC
![Fix any STM32 DFU Drivers issues when flashing Betaflight/Cleanflight firmware - Guides - DroneTrest Fix any STM32 DFU Drivers issues when flashing Betaflight/Cleanflight firmware - Guides - DroneTrest](https://www.dronetrest.com/uploads/db5290/original/2X/4/46dea181c09a751e542ef981d97c41469cb03383.jpg)
Fix any STM32 DFU Drivers issues when flashing Betaflight/Cleanflight firmware - Guides - DroneTrest
![Computer is not recognizing my drone, betaflight doesn't see any coms. Been trying to solve a problem where my drone is powering up but makes no beeps and takes no inputs from Computer is not recognizing my drone, betaflight doesn't see any coms. Been trying to solve a problem where my drone is powering up but makes no beeps and takes no inputs from](https://i.redd.it/whrx8n47rv741.jpg)
Computer is not recognizing my drone, betaflight doesn't see any coms. Been trying to solve a problem where my drone is powering up but makes no beeps and takes no inputs from
F3 Femto: Unknown USB Device, Zadig Drivers: None · Issue #405 · betaflight/ betaflight-configurator · GitHub
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