Dimming: Hold down the Select button, then press A to make the Afterburner brighter or B to make the Afterburner darker. Release the buttons when desired brightness has been reached.

Full On/Off: Hold down A for on or B for off and tap the Select button. The Afterburner will instantly turn on or off. You can also hold A or B as you power the GBA on to instantly turn the Afterburner on or off.

Chip Lock: To lock the chip so that it ignores all subsequent button presses, hold the Select button down for 5 seconds. The Afterburner will blink once to indicate that the chip is locked. To unlock, hold Select down for another 5 seconds (the Afterburner will blink twice). This feature is useful if you need to use the Select-A or B button combination in a game you are playing and don't want the dimmer to respond.

Disable Auto Power-Save: Hold the Select, A and B buttons down simultaneously for 5 seconds to prevent the dimmer from shutting off the Afterburner after 5 minutes of inactivity. The Afterburner will blink once to let you know that power-save has been disabled. To re-enable it, hold Select, A and B down for 5 seconds again. (the Afterburner will blink twice)