, check Hisense Spain , which specifically lists firmware downloads for the M5500 series.
Unzip the .rar file and place only the upgrade_loader.pkg (or similar firmware file) in the root directory of the USB. Initiate Update: Insert the USB into the TV. Unplug the TV from power. Download RSAG7 820 6392 Hisense H65M5500 part01 rar
Once you have acquired the correct .pkg or firmware file, follow these steps to update your TV: Use a USB drive formatted to FAT32 . , check Hisense Spain , which specifically lists