If the extraction fails, it means one of the parts (not necessarily part 13) is corrupted. Re-download the affected part.
To use the contents, you must have all other parts (part01, part02, etc.) in the same folder. How to Extract "sc22685-C2077ER.part13.rar" sc22685-C2077ER.part13.rar
If you are missing a part, the extraction will fail. Ensure you have all sequential files. If the extraction fails, it means one of