If you have two identical UC40 projectors and one has a newer version, you cannot easily clone firmware. This requires specialized tools (Amlogic USB Burning Tool) – not recommended for average users.
Wait for the progress bar to complete. the projector during this time to avoid "bricking" the device. Important Troubleshooting & Links Unic Uc40 Projector Software Update Download !!INSTALL!! Unic Uc40 Projector Software Update Download
Navigate to Settings > System/About > Software Update (or Local Update ) and select the USB option. If you have two identical UC40 projectors and