Ensure the extracted file is named exactly CtvUpgrade.bin (or as specified by the board's documentation).
Firmware for these generic boards is often hosted on community-driven technician forums and specialized repositories: Download CV338H U42 1920x1080 Digma part01 rar
Use a USB flash drive (8GB or less is recommended) formatted to FAT32 . Ensure the extracted file is named exactly CtvUpgrade
Repositories like Hashmie Telecom list various versions of the CV338H software, including those for Samsung and generic panels at 1920x1080. Download CV338H U42 1920x1080 Digma part01 rar