You can download the latest software update for your Unic UC40 projector from the official Unic website: www.unicglobal.com/support
: If the update fails and you have a white screen, some users have successfully updated "blindly" using a specific remote button sequence: Menu → Left → Up → OK → (Wait 5s) → Left . unic uc40 projector software update download link
Because there is no active official site for UC40 firmware, users typically find links through: Seller Support: You can download the latest software update for