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Press and hold the on the TV panel (not the remote) and plug in the power cord.
Use a FAT32-formatted USB drive (8GB or 16GB recommended). Extract: Download and extract all parts of the rar file. Download CV338H A50 1920x1080 USB Tested part01 rar
Release the button once the "Software Upgrading" progress bar appears on the screen. Press and hold the on the TV panel
Wait for the process to reach 100%. The TV will restart automatically. Download CV338H A50 1920x1080 USB Tested part01 rar
Do not power off the TV during the update process, as this can permanently brick the motherboard. Download Link [Insert Your Link Here]