Open Part 3 in WinRAR and click the "Repair" button in the top right. If the uploader included a "Recovery Record," this can fix the file without a full re-download.
Here is a blog post template designed for this type of file: Release Update: sc23924-WLOMv1169 (Part 3) sc23924-WLOMv1169.part3.rar
Right-click on Part 1 and select "Extract Here." The software will automatically pull data from Part 3 and all other segments. Open Part 3 in WinRAR and click the