Since you mentioned part01.rar , the firmware is likely a multi-part archive. You must download (e.g., part01, part02, etc.) into the same folder before extracting.
: 1GB RAM, 8GB Storage, built-in Wi-Fi, and Bluetooth. Download S368A1 Multi Res USB BOOT part01 rar
Turn on the power. The TV's indicator light should blink rapidly, signaling the update is in progress. during this time. Once the blinking stops, remove the USB and restart the TV. Common Sources for Download Since you mentioned part01
: Format a USB flash drive to FAT32 . It should be empty of other data. Since you mentioned part01.rar