Installing NSP files via CFW carries a high risk of a permanent console ban if you connect to Nintendo's official servers. Always use Exosphere or DNS MITM to block Nintendo's servers.
If the extraction fails with a "CRC Error," it usually means part4.rar (or another part) was corrupted during download. You will need to re-download that specific part.
This specific file name refers to a for a Nintendo Switch game (Persona 5 Royal) downloaded from a third-party site.
You do not need to extract every file individually. Right-click on Part 1 and select "Extract Here" (using WinRAR or 7-Zip). The software will automatically "stitch" all parts together to create the final .nsp file. 📂 Understanding the File Format
A modified Switch running Atmosphere.