BETAFLIGHT CONFIGURATOR 10.5.1 - BYE BYE FC BOOT BUTTON
У вашего броузера проблема в совместимости с HTML5
With the new Betaflight Configurator 10.5.1 you can enter bootloader mode on your FC without pushing the boot button on your FC. For quads with difficult access to the boot button this is extremely helpful... I just like to show you the new feature...
Download Link Configurator 10.5.1: https://github.com/betaflight/betaflight-configurator/releases