Copy the firmware file directly to the root directory of the USB (don't put it in a folder). The Cold Boot Method: Turn the projector off and unplug it. Insert the USB drive. Plug the power back in.
currently installed (found in Settings > About Device)? yg300 firmware verified
Avoid "all-in-one" firmware download sites, which often contain malware or incorrect files. Instead, use these safer methods: Copy the firmware file directly to the root
As of 2025, the original manufacturer has ceased official support. However, the open-source community continues to produce custom firmware (CFW). New projects are adding features like: Plug the power back in
Return to the "System Info" page to confirm the new firmware version is now displayed.
System instability or loss of basic functions like HDMI connectivity. How to Update Projector Firmware for Optimal Performance
If "yg300" refers to a less common or incorrectly stated model, providing more details or correcting the model number could help in getting more precise information.