Because this is a .rar file, it cannot be used directly by the projector. You must prepare it using a PC first.
: Firmware updates are crucial for improving the performance, fixing bugs, or adding features to electronic devices. This file could be intended for users to update their device's firmware. hy320 FW mich gong-gu 4.17.rar
: Plug the USB into the projector's USB port. Go to Settings > About Device > Local Update . Because this is a