The file you are looking for, part4.rar , is one segment of a multi-part compressed archive. To use this firmware, you generally need to:
The search results indicate that is a firmware specification for LED/Smart TVs, specifically for the North Tech 40SMS Download P75 338 1920x1080 512M NORTH TECH 40SMS part4 rar
This file is typically used for "USB recovery" or "USB flashing" when a TV is stuck on a logo or has a corrupted OS. Warning on Firmware Installation The file you are looking for, part4
Open part1 with a utility like WinRAR or 7-Zip; it will automatically pull data from the other parts to create a single .bin or .img firmware file. model using the TP
model using the TP.VST59.P75 (or similar P75 series) motherboard. Technical Specifications (often associated with the TP.VST59 chipset) Resolution: 1920 x 1080 (Full HD) RAM/Memory: 512M Brand/Model: NORTH TECH 40SMS Understanding the File Structure
The matches (located on a sticker inside the TV on the back of the LCD panel).