Free - Yg300 Firmware
: The YG300 primarily recognizes FAT32 or exFAT drives; it will typically not recognize NTFS -formatted USB sticks for firmware or media. Photon mono 4 Firmware Update Guide - Anycubic Wiki
It could now read modern .MKV video files that used to make it crash. Color Optimization: yg300 firmware
This is the most critical step. Installing the wrong firmware will permanently brick your device. Do not skip this. : The YG300 primarily recognizes FAT32 or exFAT
This procedure is based directly on the official YG300 user manual: yg300 firmware
Use a drive with a capacity of 32GB or less. Larger USB drives (64GB+) often use exFAT or NTFS, which the projector cannot read during bootup.
turn off the power during the update, as this will damage the internal software.