Sp racing evo flashing

[unmannedtech1]

Hi and welcome

My suggestion would be try using zadig drivers to flash your board in DFU mode as that is usually the most common cause for firmware flashing to fail.

Zadig Drivers for Cleanflight/BetaFlight STM32 Flight controllers (DFU Mode)

[image] If you ever have any issues when connecting your STM32 based flight controller to your PC, chances are you are using the wrong drivers for your board. This commonly occurs when you try to connect to your board, or flash firmware and you get an error message saying failed to open serial port. Update: It is much easier to use the ImpulseRC Driver Fixer tool to try that first** The first issue is to first make sure you have the correct STM VCP drivers on your PC, you can download the…

If that fails you might need to use DfuSe to manually flash your board via the .hex file