: Extract the .rar file (like the "part7.rar" you mentioned). Place the resulting firmware file (usually named allupgrade_5510_8G_1G_...pkg or having a .bin extension) directly into the root directory of the USB drive. Do not put it inside a folder. 3. Installation Procedure
: Completely disconnect the TV from the wall outlet. Download MT5510S PB802 3840x2160 SAMTRON REF80 part7 rar
: The TV should detect the file and start the update process automatically. A progress bar or "Upgrading..." message may appear on the screen. : Extract the
: Use a high-quality USB flash drive (8GB or 16GB is usually sufficient) and format it to FAT32 . A progress bar or "Upgrading
: The process typically takes 5–7 minutes . Once finished, the TV will usually reboot or enter a standby state. Unplug the USB drive and power the TV back on. ⚠️ Critical Warning