This firmware is typically hosted on technician forums and hobbyist sites rather than official manufacturer pages.
To install this firmware once you have extracted the file from the .rar archive:
: Configured for Samsung IR remotes, which is a common modification for generic smart boards to improve usability. Download CV338H A50 1366x768 SamsungIR part1 rar
: Always verify that your board model matches CV338H-A50
: Use a FAT32-formatted USB drive. Copy the firmware file (usually named CtvUpgrade.bin or similar) to the root directory. This firmware is typically hosted on technician forums
: Distributed as a split .rar archive (indicated by "part1"). You will need all parts (e.g., part1, part2) in the same folder to extract the final firmware file. Where to Find the Download
: Do not power off the TV during this process. It usually takes 1-2 minutes. Once finished, the TV should reboot into the new software. Copy the firmware file (usually named CtvUpgrade
exactly. Installing firmware for the wrong board version or resolution can permanently damage (brick) the motherboard.