I believe so, you can follow the guide here to do the OS updates with OME.     
This is hopefully a dumb question - but what is the preferred procedure for installing the required drivers inside the OS (Windows Server) on a new poweredge? I have Windows installed, and device manager is showing lots of devices that need drivers. On a desktop I'd just run Dell Command Update but there doesn't seem to be an equivalent for Windows Server. I have the iDRAC service module installed, and an Openmanage Enterprise server that I've used to verify the system's firmware is all up to date - but I can't figure out if you can update drivers inside the OS via OME. What is the proper way of doing this? Many thanks!
Installing PowerEdge drivers for Windows Server