A progress bar should appear on the screen. during this process, as it can permanently damage the motherboard.

: Once the update reaches 100%, the TV may restart automatically or the light will stop blinking. Remove the USB drive and power the TV on normally.

: Installing firmware with the wrong resolution (e.g., trying to use 1366x768 software on a 1920x1080 panel) can result in a distorted or blank screen. Always verify your panel resolution before flashing.

Updating the firmware for a smart TV motherboard—like the with a 1366x768 resolution —is a common fix for boot loops or software glitches. This specific file is likely part of a multi-part archive used to re-flash the mainboard of "QUALITA" or generic Chinese-branded LED TVs. Guide to Installing P75 338 QUALITA Firmware

: Multi-part archives (like part3.rar ) cannot be opened alone. You must download all associated parts (Part 1, Part 2, etc.) into the same folder on your computer before extraction.