: Designed for 3840x2160 (4K UHD) panels, such as the HV550QUB-N5L used in various 55-inch models.

Once you have the extracted file (e.g., allupgrade_5522_8G_1G_ref56.pkg ), follow these steps:

: Copy the extracted firmware file directly to the root of the USB drive (not inside any folder). Flashing Process : Power off the TV and unplug it from the wall. Insert the USB drive into a USB 2.0 port.

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