: The Hashmie Telecom Telegram Channel maintains a large archive of rare .rar firmware files, including those for the CV series.
: Download all parts (part01–part04). Place the extracted .bin file in the root directory (not inside a folder). Update Process : Download CV338H A50 1920x1080 USB Tested part04 rar
: This site often hosts full firmware collections. You can find their dedicated post for the CV338H-A50 Software Download which includes links for various resolutions, though verify if the "part04" split archive specifically is currently active as some older links may expire. : The Hashmie Telecom Telegram Channel maintains a
Insert the USB into the TV's USB port while the power is off. then plug in the power cord.
Press and hold the Power button on the TV panel, then plug in the power cord.