I have a relatively long time looking for an alternative to this stick because I was also informed only after a request from LG, the AN-WF 100 also with brand new models xxLVyyyy and xxLWyyyy (xx = Size / LV = 2D / LW = 3D / yyyy = model number) is supposed to work. Although the TV, there is a special USB port for which I have found, however adapters or cables / Stick.
Alternative - available and much cheaper!
Netgear Dual Band WLAN adapter USB 2.0 WNDA3100-200PES or WNDA3100v2
For me it works without problems on a LG 47LV5500 with FW: 5.xxx
When first infected, although there was a message that the USB device is not supported,
but the wireless settings were then selected and configurable!
As a little bonus at the stick nor an extension cord and a holder with Velcro strips thereby, so that I could stick the stick from behind the top of the TV. (The back of the TV is made of metal and protects the well known from WLAN)
With the Panasonic TVs that stick should work, too, as some already confirmed here!
Pay attention only on that, it is also the v2 (-200PES)!
Have fun with it!