I wanna know how could I update the drivers of my grafic card, and its not that simple, most of the auto-search programs dont fing my AMD grafic card so i cant update it, when i found one program that actually workt i tryed to update my drivers but it doesnt work. It says that they will be updated to the last version and when you look at the report files it actually stays on version 15.301 when I need the version 17.6 or later. I dont actually know what should I do.
iMac (using bootcamp)
OS: Windows 10 Home (x64)
Intel core i-5.6500 3.20 GHz
AMD R9 390 4Gb
(It's the default config of the iMac, I havent touch/modified anything)