Savefile

Flipnote Studio's savefile stores all of the Flipnotes saved under.

The savefile can be found stored on the DSi NAND at ⁨title⁩/⁨00030004⁩/<title id>/⁨data/public.sav. Where title ID varies depending on the console's region:

Region	Title ID
Europe	4B475556
Americas	4B475545
Japan	4B47554A

File Structure

When mounted as a regular disk .img file, public.sav contains the following subfile structure:

public.sav
├── eula.txt
├── friend.pls
├── latest1.pls
├── mark0.pls
├── mark1.pls
├── mark2.pls
├── mark3.pls
├── nand.pls
├── option.bin
├── recent10.pls
├── remind.pls
└── ugo
    ├── 001
    ├── ...
    └── 032

• eula.txt - Stores a copy of the most recent EULA / Terms of Service from Flipnote Hatena, or whatever third-party replacement service you connected to last. It is plaintext and encoded as little-endian utf-16.

• Any file ending in .pls - This is a playlist file, which are fully documented here. TL;DR these store lists of Flipnote filepaths for various different purposes, such as tracking which ones you added stickers to.

• option.bin - Stores user settings and Flipnote Studio ID. This is first generated after the user has completed the introduction tutorial. Its structure is partially documented below.

• ugo/... - All of the Flipnotes that you save to System Memory are stored here. The subdirectory (001 to 032) seems to be chosen at random, but that isn't certain.

Option.bin

This file is used to stores user settings like birthday, drawing hand preference, Frog display, the number of pages to show when tracing is enabled, and so on. It also stores the user's Flipnote Studio ID.

Offset	Type	Details
0x0-0x12	-	Unknown
0xC	uint8	Advanced Tools on / off
0xD	uint8	Number of pages to show when tracing is enabled
0xE	uint8	Frog display on / off
0x10	uint64	User's Flipnote Studio ID in little endian byte order
0x18	uint16	Savefile checksum
0x1A	uint16	User's birth year
0x1C	uint8	User's birth month
0x1D	uint8	User's birth day
0x1D-0xFF	-	Null padding