Lg Soundbar Nb4540 Software Update — Confirmed

: Place the firmware file in the root directory (not inside a folder).

Many users report that after updating, their NB4540 works flawlessly with modern 4K TVs, including LG’s own webOS models. Do not let an outdated firmware turn your soundbar into a frustrating paperweight. Follow this guide step by step, and enjoy another 5+ years of rich, room-filling audio. lg soundbar nb4540 software update