I have my LG TV UH7700 for more than 2 years now and the Magic Remote worked fine until 3 days ago, I remember the was a recent firmware update. Now I have the same problem you posted, I registered and de-registered it multiple times and it works at some point but then doesn’t do more than turn the tv on and off. Sometimes it starts to work, but then stops again. At certain times it fails to register, but then, it is when it works and do more functions for a while, until it registers again and stops working. Have changed batteries, and done everything recommended, but still fails. I guess it is a firmware/software problem.
