Got two of these: https://www.gearbest.com/flight-controller/pp_638475.html F3 ACRO 6DOF Flight Controllers. One has its boot pins bridged one does not. Can't seem to flash BF or even Cleanflight. It says in CF it needs an update but when I go to choose the version I pick SPRACINGF3 and the latest version but I either get a bootloader error (unbridged) or a communication error (bridged boot pins). I am not sure what I am doing wrong, I am using the chrome apps on my macbook and they always work. Help? Obi wan? Anyone? Sorry if this is a noob question but I have been searching all over and doing what should work.