Insert the USB into the powered-off TV. Turn the TV on (or hold the Power button depending on your model) and wait for the update progress bar to finish.
Ensure you have both part1.rar and part2.rar in the same folder before extracting. Download M358 809 1366X768 512M PAKISTAN part2 rar
Right-click Part 1 and select "Extract Here" to get the .bin or .pkg file. Prepare USB: Format a USB drive to FAT32 . Insert the USB into the powered-off TV
Do not turn off the power during the installation process, as this can "brick" your TV. as this can "brick" your TV.