I download one beta firmware 2.2.2 and upgrade the PTV3000. When it reboot and show its new ID on TV, Nexus 4 can locate and connect it.
I test some game and movie and TV can mirror the display of Nexus 4 perfectly. I think NetGear will get this device to get certification i early 2013 and release official firmware to assure 100% perfect stream between PTV3000 and Nexus 4.
How to locate PTV3000 ? Follow this steps: Setting -> Display -> Wireless Display.