. Historically, LG webOS versions were tied to the hardware they launched with, meaning a TV released with webOS 3.5 or 3.9 typically only receives minor firmware updates within that version rather than jumping to a new major release. Why You Can't Usually Upgrade Hardware Dependency
This is the best solution. Buy an , Roku Streaming Stick 4K , or Apple TV 4K . These devices cost less than $50 and offer features far beyond webOS 4.0, including: update webos 3.9 to 4.0
Before you start, check your model number. If the update is there, grab a coffee and run it. If it is not, head to Amazon and buy a streaming stick. Your viewing experience will be just as good—if not better—than native webOS 4.0. Buy an , Roku Streaming Stick 4K , or Apple TV 4K
(the "Re:New program"), which does not cover older 3.x models. How to Check for Available Updates If it is not, head to Amazon and buy a streaming stick
Look at the sticker on the back of your TV. It will look like OLED55B7P or 65UJ7700 .