Pokémon XY Save File Structure

X/Y Save files are comprised of 4 sections, the latter two storing the contents of the two savegames.

The game alternates between the two game saves similar to Generations 3 & 4.

Save files are 0x100000 (1MB). The area between sections is either FF or 00, for Cartridges and Digital saves respectively.

Single Partition Save File

http://3dbrew.org/wiki/Savegames

First Partition (0x01000-0x01107)

Save File 1 (0x02000 - 0x6AFFF)

(420 KB)

Start	End	CHK	Description
05400	?????	6A81A	????
05400	?????	6A822	05400 - Pokepuffs 05460 - Friends List
05800	?????	6A82A	05800 - Items Pocket 05E40 - Key Items Pocket 05FC0 - TM Pocket 06168 - Medicine Pocket 06268 - Berry Pocket
06600	?????	6A832	????
06800	?????	6A83A	Trainer Stat Flags (Style)
06A00	?????	6A842	????
06C00	?????	6A84A	????
06E00	?????	6A852	Wardrobe (Bitflags) & Saved Outfits (Index #s)
07000	?????	6A85A	u16/u8 storage
07200	?????	6A862	FFFFFFFF
07400	?????	6A86A	Overworld Data
09600	?????	6A872	Trainer Information ($)
09800	?????	6A87A	Box Names
09E00	?????	6A882	Battle Box
0A400	?????	6A88A	PSS Data - Friends
0F400	?????	6A892	PSS Data - Acquaintances
14400	?????	6A89A	PSS Data - Passerby
19400	?????	6A8A2	Trainer Card (ID/SID/OT/Greeting)
19600	?????	6A8AA	Party Members
19E00	?????	6A8B2	Constant & Event Flags
1A400	?????	6A8BA	Pokedex
1AC00	?????	6A8C2	Sorted Variables
1B400	?????	6A8CA	Fused Zekrom/Reshiram Storage
1B600	?????	6A8D2	????
1B800	?????	6A8DA	????
1BE00	?????	6A8E2	O-Power Flags
1C000	?????	6A8EA	????
1C400	?????	6A8F2	User Metadata
1CC00	?????	6A8FA	GTS Upload & Match Criteria
1CE00	?????	6A902	????
1D000	?????	6A90A	????
1D200	?????	6A912	????
1D400	?????	6A91A	????
1D600	?????	6A922	????
1D800	?????	6A92A	?Tournament Data (WiFi / Live 0x400 ea)?
1E400	?????	6A932	MAC Address & Network Connection Logging
1E800	?????	6A93A	Hall of Fame Data (First Game Clear + 15 Latest)
20400	?????	6A942	Maison Data
20600	?????	6A94A	Daycare Data
20?00	?????	6A952	????
20C00	?????	6A95A	Berry Field Data (0x18 per tree, 36 trees)
21000	?????	6A962	Wondercard Data 0x100 bitflag-card received storage Wondercard slots (0x108 between)
22C00	?????	6A96A	????
23000	?????	6A972	Friend Safari Data
23800	?????	6A97A	PSS Data
23C00	?????	6A982	????
24600	?????	6A98A	????
2??00	?????	6A992	????
25400	?????	6A99A	Pokemon Bank Gifts
26000	?????	6A9A2	????
26200	?????	6A9AA	PGL Promotion Gifts
2??00	?????	6A9B2	????
2??00	?????	6A9BA	????
27A00	5C4D0	6A9C2	Box Data (31 Boxes, 30 Slots, 232 bytes each)
5C600	?????	6A9CA	Picture Data (JPEG Exif Ver 2.2) ~ 5C654 starts the JPEG (FF D8 marker) - Sent to PGL
6A800	?????	N/A	Checksum Storage

Save File 2 (0x81000 - 0xE9FFF)

(420 KB)

Same as Game Save 1's offsets; add 0x7F000.