I'm not saying this is your problem, but it might give you an idea, it wouldn't be the boot button being stuck, if it was it would just be listed as DFU in betaflight. Close Chrome and the configurator, open them up again, plug in your flight controller, and when you click connect, it should now start working fine. Unplug your flight controller from the USB if it was plugged in. I'm really sorry but I'm not anywhere near a PC to refresh the way to do it but it involved going into device manager and enabling an option that displayed allocated resources, then deleting some of the reserved com ports, I had this before with an omnibus f3, it would let me flash it, but when I connected it normally the port settings on the top right of beta flight didn't change and I eventually chased it to there being no more com ports available, deleted some and after a reboot, it connected fine. Simply install the drivers it takes less than 2 minutes, and if prompted, restart your computer. Most people never manage to fill up the com port allocation, but us lot with our numerous FTDI adaptors, Arduinos, flight controllers and modules can. Sent from my SM-G930V using Tapatalk Failed to open serial port when. Every time you connect a usb device to the PC it allocates a com port to it so that the next time it knows the device, eventually you will fill up the com ports and you will have to delve deep into device manager and delete some of the allocated ports to free them up, this is why on some programs, you'll get a list of com ports and some have reserve next to them. Betaflight supports a wide range of flight controllers that have at least an.
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