Note: Please call our customer service hotlines for further instructions and information before you update the firmware of your karaoke unit. Office hours: Monday to Saturday 08:00 am to 04:00 pm (Philippines Standard Time) GLOBE #2: +63-9178433053 SUN: +63-9334343772 - Viber /WhatsappSMART: +63-9392497210LANDLINE: (02) 8-866-1162 LOC 118/119