: Place all extracted files (typically 5 files) directly into the root directory of the USB drive. Do not put them in a folder. Power Off : Unplug the TV from the wall outlet.

: Because firmware files for 4K Smart TVs can be large (often several gigabytes), they are often split into smaller volumes (e.g., .part01.rar through .part04.rar ) for easier hosting and downloading.

Once you have the extracted files, follow these general steps found in technical service manuals for this board: : Format a USB flash drive to FAT32 .

allupgrade_5522_8G_1G_ref56.pkg (The primary firmware package)

: You cannot use part04.rar on its own. To successfully extract the firmware, you must download all parts (01, 02, 03, and 04) into the same folder on your computer.

Once extracted, you will usually find the following files required for a USB update:

: Hold down the Power button on the TV (not the remote) and plug the TV back into the outlet.