Ensure your USB drive is empty. Copy the downloaded update file into the root directory of the USB drive. Do not place it inside a folder; the projector needs to see it immediately upon plugging it in.
is a legacy portable LED projector first released around 2014–2015. Because of its age, official firmware updates are extremely rare, and most modern "download" links found online may be unreliable or third-party repositories. Finding and Downloading Updates unic uc40 projector software update download new