1. Power down the BooBox 4, then power it back up holding the REC button until the PLY light turns on. 2. Press buttons “1” and “3” so the 1 and 3 lights turn on, then press REC, the REC light should turn on. 3. Now press the “1” button, turning the light on if you want write-protection, or off if not. 4. Press REC twice, both the PLAY and REC lights should turn off.