The typical method for installing universal 4K board firmware is through a "forced" USB update: How to update the firmware / Software on a Samsung TV
Large firmware files are often split into smaller "parts" (e.g., part01, part02, part03) to make downloading more manageable and stable. Download HV553 3840x2160 GENERAL 55JP55UAS part03 rar
: Format a USB flash drive to FAT32 . Copy the extracted firmware file directly to the root directory of the drive—do not place it inside any folders, or the TV will not detect it. Firmware Installation Process The typical method for installing universal 4K board