How to troubleshoot or setup (pair) starting with a force hard factory reset a JBL Boombox 3 (3rd generation) Bluetooth Speaker to factory default settings if it is not working or not connecting/pairing or if it is frozen or not responding, the factory reset is a good troubleshooting step. You can also restore the factory settings to setup your device as new. Found in the JBL Boombox 3 Bluetooth Speaker user manual.
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