Yeah, also i have tried that but it didn't worked
Yesterday i have reinstalled mac os from scratch.but still it is not working. I Don't know what I am missing.i have followed each and every steps. i think maximum kexts are tested and developed in asus mobos and my one is msi b350 gaming plus.
Im not Shure but maybe it is the reason.
If somebody faced same issue like i am facing then please help me if you have any solutions or suggestions.
finally i have resolved my usb 3.1 port detection issue. i seen a video of mac os sierra installation in youtube channel 'Michael Gorliak'. he was using a msi b350 motherboard like my one. i have just used his usb kext files which he was using in his installation. those kexts works for me. bytheway he got got those kexts from this forum and thats all.