Since this is a .part2.rar file, it won't open on its own. You’ll need to make sure sp2224-three.part1.rar and sp2224-three.part3.rar (and any others) are in the same folder. Once they are all there, right-click Part 1 and select "Extract Here"—it will automatically pull the data from Part 2!
Resource: sp2224-three.part2.rar (Firmware/Service Data)
Best if you are asking for help or offering a fix to others. Fixed the extraction error for sp2224-three!