To successfully extract the firmware, you must download all parts (part1, part2, part3, etc.) into the same folder before opening the first one with a program like WinRAR or 7-Zip.
Based on common community resources for IRIS SAT firmware, you can look for the complete set at these sites: Download IRIS 49E700A Firmware part3 rar
: A well-known repository for LED TV dump files and firmware. You may need a free account to access specific download links. To successfully extract the firmware, you must download