Since there is no "official" YG300 website, the most reliable sources are:
during the update. The YG300 takes about 2–5 minutes to flash. Once finished, it will usually reboot automatically. Troubleshooting Common Issues "No File Found" yg300 firmware verified
The market is flooded with clones of the YG300. While they all look identical on the outside, the internal motherboards often differ. Installing the wrong firmware can result in a "black screen of death," where the projector powers on but displays nothing. Since there is no "official" YG300 website, the