I upgraded my home Surf Soho to 6.3 today, and ran into a few odd issues that cause me to downgrade this evening. I tried restarting everything multiple times. Wifi (through my Routerboard) was non functional. Some wired connections (Roku) were non functional, but not all wired connections were.
Priority 1: WAN is wired cable internet
Priority 2: USB standby
Putting this out there in case others run into something similar.