The Lamps support the way turn on/off power three times to restore factory settings,please follow below steps.

1. Switch off.
2. First time Switch on, waiting for 1-3 seconds then switch off.
3. Second time Switch on, waiting for 1-3 seconds then switch off.
4. Third time Switch on, waiting for 1-3 seconds then switch off.
5. Fourth time switch on, the Lamps will strobe, it means restoring factory setting, please don’t switch off the power.
6. when the brightness is cool color, it means restore factory setting succeeded,.(The mode is cool white with warm white changing in few minutes after restore factory setting succeeded).