Extracting just "Part 3" will not work. RAR archives that are split require every segment to be present to rebuild the original .bin or .img file.
: Match the sticker on the back of the LCD panel (e.g., C420F15-E6-C ). Download IRIS SAT 42E790S EMMC Backup part3 rar
If you can provide the (written on the green circuit board), I can help you find a more direct link or a compatible alternative firmware. Extracting just "Part 3" will not work
: You must download all parts (Part 1, Part 2, and Part 3) and place them in the same folder before extracting the first one. ⚠️ Important Reminder Download IRIS SAT 42E790S EMMC Backup part3 rar