Resetting the security code To reset the security code to 0000 press the A button, OSC1 FREQ button in the LFO modulation section, and the sawtooth waveform button for oscillator 3 simultaneously. Please reference the image below. Click on image for larger version Enabling/disabling memory writes Press the C button followed by 8 and ENTER. The display will show the current state, either ENABLED or DISABLED. Enter your four digit security code to change state. Changing the security code Press the C button followed by 8 and ENTER, then C again. The display will read OLD CODE. Enter the old four digit security code and press ENTER. The display will now read NEW CODE. Enter the new four digit security code and press ENTER. Note: I recommend leaving the security code 0000.