Prod Keys vs Title Keys — What Is the Difference?
The two files are frequently confused because they sit in the same folder and are both about decryption. They operate at different layers, and which one you are missing can be read straight off the error message.
Side by side
| prod.keys | title.keys | |
|---|---|---|
| Scope | Whole console encryption layer | One game, update or DLC |
| Shared between emulators | Yes, identical file everywhere | Yes, but only where it is required at all |
| Folder | Keys folder (system folder in Ryujinx) | Same folder as prod.keys |
| Required by current builds | Always | Rarely |
| Content | Master, derived and title key area keys | Per-title key entries |
Which one is missing
| What you see | What it usually means |
|---|---|
| Every game fails to load with a decryption error | prod.keys missing, not found or far too old |
| One specific title fails, others are fine | Missing or mismatched title key |
| Emulator reports no keys at startup | prod.keys is absent or in the wrong folder |
| Game decrypts and then asks for a system update | Neither file — this is firmware, see firmware too low |
Can you use one as the other
No. They contain different key material at different layers, and renaming one to the other produces a file the emulator will read and then reject. If you need both, keep them as two files in the same folder.
Background on each: what are prod keys and title keys.
Frequently asked questions
Which file do I need for an eShop game?
Start with prod.keys. Only add title.keys if that specific title reports a missing title key.<br />
Can I use prod.keys as title.keys?
No. They hold different key material and renaming one does not convert it.<br />
Why do some emulators only ask for one file?
Current builds derive per-title keys automatically, so they never request the second file.<br />