NandFiler
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NandFiler is the name of an application that comes bundled with TWLSDKs and the SystemUpdater application. This application is a simple portable hex editor. It's mainly used for editing values in certain game files or for manual save file corruption, to test if a save file corruption message would appear when developing and testing a DSiWare game.
Screenshots
What NandFiler looks like when you start it up.
Highlighting a random file from Flipnote Studio that was stored somewhere on the NAND.
The hex editor itself.
The hex editor again, now with on-screen instructions by pressing SELECT.
NandFiler backing up a folder from an application. The folder gets extracted as a file to the SD Card.
The Export and 'Fill' options, which can only be used on things stored on the SD Card.
