If you own one of the Optoma HD20 family of projectors, including any of the following models: HD20, HD20-LV, HD21, HD22, HD23, HD200, HD200X, HD200X-LV,
If you own one of the Optoma HD20 family of projectors, including any of the following models: HD20, HD20-LV, HD21, HD22, HD23, HD200, HD200X, HD200X-LV,