: Ensure you have SiMo15.part1.rar , SiMo15.part2.rar , and any other numbered parts in the same location.
: The software will automatically pull data from part 2 (and subsequent parts) to reconstruct the original full file. SiMo15.part2.rar
Are you getting an when trying to extract, or are you missing some of the other parts? How to Extract Part .RAR Files (Full Guide) : Ensure you have SiMo15
: Use a tool like 7-Zip or WinRAR and right-click specifically on Part 1 . : Ensure you have SiMo15.part1.rar