Add hotel mode documentation

LG.md

@@ -13,6 +13,14 @@ You can save the old channel list first and use it later as a reference list to
 Even if you follow these rules, some users report of channels being randomly moved / deleted while zapping or putting the TV in standby. Other users with the very same model report that it works like a charm.
 Unfortunately there is no way of telling you whether it will work on your TV or not. You'll have to try it yourself.
 
+## Note about "TV to USB" option missing
+
+LG TVs has a "Hotel Mode" which can be opened in the following way: 
+- Navigate to Live TV
+- Hold down the settings button on your remote until the settings panel disappear and the current channel info shows up
+- Quickly type the following code: 1105 and hit OK (The code is maybe different for your tv, but as I can see this is a common one)
+- The Hotel mode window would open up, here you can (probably) find the copy to USB option.
+
 2014-2015 Series (LB, UB)
 ---
 Current firmware versions allow you to export/import channel lists from the TV's regular menu.