How do I update my AMD drivers on bootcamp to the newest (Crimson Edition) drivers?

I am trying to update my AMD drivers to the Crimson Edition so that I am able to play some of the newer games as they require these drivers. Upon clicking the automatic driver update option through device management, it always says that I have the newest drivers installed. I have tried to update them through AMD's software support site but whenever I launch the official update exe it fails and I get a dialog box that reads something along the lines of "No AMD hardware was detected." I have already attempted to wipe all the drivers using the DDU program as well as a partially signed update package through bootcampdrivers.com but that is not working for me either. 😢

Late 2015 27in iMac running Windows 8.1 (AMD Radeon R9 M380 2GB)