If you are genuinely interested in PS4 homebrew or jailbreaking (for legal, archival purposes only):

Now that you are fully informed, proceed with confidence. Happy modding, and enjoy unleashing the hidden potential of your PlayStation 4.

If you are looking for modern functionality, consider these updated projects:

A: Yes, it works across all PS4 models, provided the firmware is compatible.

The PlayStation 4 Express Tool 1.0 is a third-party desktop application designed primarily for Windows PCs. It acts as a comprehensive manager for your PlayStation 4, aiming to simplify complex processes that would otherwise require manual input via FTP (File Transfer Protocol) or USB manipulation.