: Scroll down until you find "Software Upgrade" or "Firmware Update" and press OK .
: Copy the update file directly to the root directory of your USB drive (not inside a folder). Initiate the Update : Turn off the projector and unplug all cables. Insert the USB drive into the projector's USB port. Plug the power back in and turn on the projector. Navigate to Settings > System > Update (or Upgrade ). Select Local Update if prompted. yg300 projector software update upd