USERDATA.JAM Extractor

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If you see this for more than a few seconds, JavaScript may be disabled or blocked. The tool needs client-side scripting to work — it's how we keep your file on your device instead of sending it to us.

USERDATA.JAM is the filename Unreal Tournament 3 uses for PlayStation 3 mod imports. When you transfer a mod to a PS3 via USB, the console reads it from PS3/SAVEDATA/<GAMEID>-MODIMPORT/USERDATA.JAM and unpacks it internally using the in-game Mod Browser.

Any UT3 PS3 release works. The <GAMEID> in the folder path matches whichever disc or PSN SKU you own:

• BLUS30086 — North America (original disc)
• BLES00167 — Europe (original disc)
• BLES00200 — Europe (later release / budget reprint)

The mod files inside the JAM are region-agnostic — the same mod works on all releases. Just make sure the folder name on your USB matches your disc's game ID.

The JAM itself is a simple container — no compression, no encryption. It holds the individual files the mod consists of: typically a .xxx UE3 package (the cooked PS3 version of the mod's script and assets), a .tfc texture cache, a .ini configuration file, and a GUID cache. A typical mod contains 3–5 files; map packs can contain dozens.

This extractor reads the JAM's table of contents, slices out each file at its recorded offset and size, and packs them into a standard ZIP archive. It's useful for:

• Inspecting a mod's contents before installing it
• Installing on a modded PS3 (HEN / CFW / MultiMAN) where you have filesystem access and can drop the loose .xxx and .tfc files directly into the game's install directory
• Archiving, cataloguing, or academic research on UT3 PS3 mods
• Recovering individual files from a JAM without going through the console

Stock PS3 users don't need this tool. If you're running official PS3 firmware and installing mods through UT3's in-game Mod Import, you just need the USERDATA.JAM file placed at the root of a FAT32 USB drive. See the install guide. The extracted loose files are only useful if your PS3 has root filesystem access (modded via PS3HEN or CFW).

The format was reverse-engineered from the mod archives at the Internet Archive's UT3 PS3 Mod Archive collections.

On privacy: everything the extractor does happens inside your browser. The JavaScript running this page reads your dropped file via the browser's File API, parses it in memory, builds the ZIP with JSZip, and offers it back as a download. No network request is made with your file's contents — nothing is transmitted to ut3mod.com, Cloudflare, or any third party.

Thanks — This tool was shaped by Stevie Feathers (deathscythechibi), who suggested the idea and helped test it against the European UT3 release (BLES00200).