Do not rename the .bin file unless instructed by the specific firmware readme.
You need Part 1, Part 2, Part 3, and Part 4 in the same folder. Extraction Tool: Use WinRAR or 7-Zip. Download IRIS SAT 42E710S Firmware part4 rar
If you need the or the specific mainboard version for this model: Share the Mainboard number (found inside the TV). Specify if you need the USB upgrade file or the EMMC dump . I can help find the exact mirror for the missing parts. Do not rename the