Before downloading, you must confirm the firmware matches your TV's (usually printed on the green PCB inside the TV, e.g., TP.MS338.PC821 or similar). Installing the wrong firmware can permanently "brick" your device. Common Sources for IRIS TV Firmware
For general Smart TV downloads, the SmartTech TV Download Center lists various 55-inch models, though you must match the exact build version. How to Use Multipart RAR Files
Some technicians provide download links in the descriptions of YouTube tutorials. You can find general IRIS update guides on YouTube which sometimes link to external repositories for files like part06.rar.
Copy the extracted file to a FAT32-formatted USB drive. General USB Update Procedure Once you have the full file: Turn off the TV and unplug it. Insert the USB drive into the USB 2.0 port.
You must have every part (e.g., part01 through part06) in the same folder.
Hold the button on the TV (not the remote) and plug the power cord back in.
Right-click part01.rar and select "Extract Here." The software (like WinRAR or 7-Zip) will automatically pull data from the other parts, including part06, to create a single .bin or .pkg file.