SMC Firmware disabled USB ports
I use this PC as my DJ computer. I rely on working USB ports to work with my controller/mixer. I WAS running Yosemite (as I dont trust sierra and beyond). To get ready for the most recent gig I ran updates. In my experience with apple keeping the base OS the same and running updates takes care of issues without killing performance, at least until now.
I ran the updates and the USB ports no longer work. I have done SMC resets, I have cleared the NVRAM(PRAM). The MBP is running SMC 1.68f99. Now where I feel 99% sure that apple screwed me in the update vs just a hardware failure at the logic board. When I search for information on the SMC I found a downloadable from apple with the firmware as 1.68f98. I dont know what firmware it was on previously because I didnt think to check it before updating. whoops i trusted apple.
My thought to fix would be to downgrade but the only how to I have found has the use of a bootable USB device…which I cant use since the USB ports dont work. I thought about using a thunderbolt to usb adapter but there are only like 2 out there and theyre $80…wtf isnt older tech supposed to get cheaper.
Does anyone have a solid way of downgrading the SMC version. Also I am currently running HighSierra as I thought an OS update would solve the issue. WRONG. I am open to the idea of replacing the Logic Board but I would really like to try to get the SMC rolled back to rule out software before hardware.
Questa è una buona domanda?