Instructions
Press and hold the power button to turn off the Spektrum DX7.
Press and hold the "Down" and "Select" buttons simultaneously and press the power button to turn the DX7 on.
Press the "Increase" button until you see the "Model Select" prompt on the screen. Press "Select" to enter the "Model Select" menu.
Press the "Increase" or "Decrease" button to scroll through the models that come preloaded into the DX7. When you find the model of your aircraft, press the "Select" button to choose it.