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Jabra Pro 920 reset instructions Disconnect the power cord to the Pro unit Take the headset and press & hold the black circle in the silver circle until the white light on the headset flashes rapidly, then release immediately. You should now see no lights on the headset as it should be completely turned off.
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4. Use EITHER the up or down volume button (quick press and release) to cycle through the next menu. You will hear the values below and see the battery light on the base unit change colour accordingly. When you hear ‘GN1000/RHL/NONE’ stop 5.