The screen may stay black, or a "Software Upgrading" progress bar will appear. The standby LED usually blinks during this process.
LED TV. This guide covers how to safely download, extract, and install this firmware update. 1. Preparation & Hardware Requirements
How to update using a USB drive. If your TV is not connected to the Internet, it is a good idea to update your TV via a USB drive. samsung.com
Once the blinking stops or the TV restarts, remove the USB drive immediately.
Firmware updates are critical. Ensure you have the following before starting: with an internet connection. WinRAR or 7-Zip installed to extract multi-part archives. USB Flash Drive: Minimum 4GB, formatted to FAT32 . Verification: Ensure your TV model is exactly DNS K55DS712 . Using the wrong firmware can "brick" the device. 2. Downloading & Extracting the Firmware
The file you mentioned is "part2," which implies it is part of a split archive.
Right-click part1.rar and select "Extract Here." WinRAR will automatically pull data from part2 to create the full firmware file (usually ending in .bin or .pkg ).