Lg Soundbar Nb4540 Software Update -

Remember: firmware updates fix bugs; they do not transform hardware. Your NB4540 will never support Dolby Atmos or eARC, but a successful update will make it stable enough to serve as a reliable TV speaker for years to come. Drop a comment below or visit the LG Community Forums. If you successfully updated your NB4540 using a rare firmware file, please share the version number to help other owners.

Keeping the firmware updated on your LG NB4540 is not just about new features—it’s about stability, compatibility with new TV models, and fixing known bugs. lg soundbar nb4540 software update

Last updated: May 2026