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Tool to dump unencrypted romFS and exeFS for Switch 2 games
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misshexa66 43dd500a10 port tar support from my private fork 
i forked off to work on tar support and better file listing at the same time, put them back together
2026-11-04 20:52:07 +00:00
engine port tar support from my private fork 2026-11-04 20:52:07 +00:00
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README.md port tar support from my private fork 2026-11-04 20:52:07 +00:00

README.md

OunceCake

(ozdumptool if you're lame and boring)

Tool to dump unencrypted romFS and exeFS for Switch 2 games, updates and DLC.

Supports digital games, game cards, Switch 2 Editions, etc. (For NSO titles, make sure the title has been opened recently before you attempt to mount it, otherwise the mount will fail.)

Disclaimer

For the love of God, do NOT share any files you rip using this tool. It is to be used with ONLY your own games on your OWN system. This tool doesn't provide system keys or any method to decrypt files. The files are loaded normally by the system, then pulled over FTP.

Usage

  1. Take note of your Switch 2's local IP address. It can be found in the network settings.

  2. Clone the repo:

git clone https://github.com/misshexa66/OunceCake.git

  1. Use kurumuz's fork of the ns2jb exploit to get an RPC connection with the system. Use node run.cjs --rpc.

  2. Run node ouncecake.cjs <path-to-ns2jb-run>. The output from ns2jb will tell you where this path is. (Run folder: /home/hexa/projects/ns2jb2/runs/switch2-Icu7Jd)

  3. OunceCake will prompt you to pick a game. Pick one, then wait.

  4. When OunceCake says FTP up! ftp://<switch 2 ip>:2121, use an FTP client to connect to your Switch 2's local IP address with port 2121. A username and password is not required. (Make sure your FTP client has its transfer mode set to Binary/Image/TYPE I.)

Tar Mode

OunceCake now has support for showing game data as .tar files instead of raw folders, allowing for faster downloading. Add --tar to the launch args.

Licensing

OunceCake is licensed under the terms of the GPLv2 (because it borrows a tiny bit of code from Atmosphere)

You can find a copy of the license in the LICENSE file.