Here's how to connect a different device to the JBL flip. The Flip will only accept one device at a time.
Step One: Turn off the bluetooth on the previous device or, in the case of an apple product, tell your device to forget the JBL Flip.
Step Two: Turn on the JBL Flip. You'll hear the beep and the blue light will flash.
Step Three: Re-press the power button and hold the indicator light around the power button blinks red and then release.
Step Four: Follow your normal pairing procedure.