I was a bit disappointed after updating the firmware to 2.18B… That the scandisk player does not see the jbl xtreme speaker… People may ask why you want a setup like that? Well, where I work you are not allowed a phone on the floor. However you can have music playing as long it’s not overly loud. We are required to be able to still hear the cnc machine cutting steel, or cutting to hard. So having a mp3 player would the key. But now that the bluetooth is not working, and have used the jbl xtreme many times via my phone bluetooth. But now I guess will have to use option 2, which is plug in a cord from mp3 player to jbl speaker.