I can flash ROMs and root phones, but when it comes to my G Watch R, I sit patiently every time there's an update and wait in agony for it to roll to my wrist. I don't know why, I'm just too overwhelmed by the idea of forcing something on a watch. If my modern-day dilemma doesn't concern you and you know your way around an OTA URL for smartwatches, you're in luck because you can get Android 5.1.1 on your lovingly-dubbed GWAR sooner than me.
The link can be found in the sources below, and it takes your G Watch R (codename lenok) from Android Wear 5.0.2 build LWX49K to 5.1.1 build LDZ22D. Go enjoy all the goodies, but remember that the G Watch R does not have WiFi enabled in this update. It may or may not come later.