Use a USB flash drive (8GB or less is recommended) formatted to FAT32 .
Please provide the model number of your Digma TV (e.g., DM-LED43F...) to narrow down the exact file version. firmware - viofo Download CV338H U42 1920x1080 Digma part01 rar
Ensure the extracted file is named exactly CtvUpgrade.bin (or as specified by the board's documentation). Use a USB flash drive (8GB or less
Sites like LEDTVSOFTWARES.COM provide links for "all resolutions" for this board family. Download CV338H U42 1920x1080 Digma part01 rar