Can't arm quad in betaflight

[unmannedtech1]

Have you tried the driver fixer program here?

Fix any STM32 DFU Drivers issues when flashing Betaflight/Cleanflight firmware

Many months ago if you ever had any issues with connecting your flight controller to cleanflight/betaflight or any other variation the defacto suggestion would be to first install the suggested drivers for that flight controller and then use the Zadig Driver tool to reinstall the WinUSB drivers which solved 99% of issues. Use ImpulseRC Driver Fixer Tool However now there is an easier way thanks to the impulseRC driver fixer tool! Essentially what this tool does is when your board is connected…