The first thing that you have to be sure of is that you have the vcp drivers installed for the Colibri. The Colibri and other newer flight controllers are using a virtual com port to communicate via USB as opposed to older hardware that uses a cp210x serial to USB chip to communicate via USB.
You can download load and install the VCP drivers from the betaflight setup screen
If this is a QQ190 or a TBS Vendetta then you can use the TBS agent software to update the board. For more info see manual.qq190racingdrone.com
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