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LG Soundbar NB4540 Software Update: A Complete Step-by-Step Guide to Firmware Upgrades

Method A: LG Soundbar App (Recommended)

There are two primary ways to check for and apply updates to this soundbar:

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Problem 4: "No Update Available" but You Know a Newer Version Exists

Step 2: Prepare the USB Drive

: If the update fails or the soundbar becomes unresponsive, you can perform a factory reset by holding the Volume Down Sound Effect LG Soundbar NB4540 Software Update: A Complete Step-by-Step