1. Make sure to use Fat32 Format USB Flashdrive not higher than 16GB for complete compatibility
2. Download the firmware on the link below and copy to the USB Flashdrive 
   
Piolo SD


3. Power your karaoke unit and remove SD card carefully before plugging in your USB Flashdrive
4. Power On the karaoke unit and the system will automatically update the program
5. Once done, remove flashdrive and turn off the karaoke unit
6.  Insert SD card again carefully before power on.