First you need to remove the sliding door. You can do this by opening it and lifitng one side with a screwdriver like on one of the pictures.
After that you can remove the battery cap and batteries.
Than you will need to remove the JBL logo. This is quite tricky. because it is glued.
After that you can remove all the torx screws and open the device.
http://imgur.com/a/CzyatI damaged mine because I didn't have proper tools. Fixed the speaker though.
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