Pokémon B2W2 Save File Structure
Main Save File & Backup
| Start | End | Checksum | Mirror | Description |
| 00000 | 003DF | 003E2 | 25F00 | Box Names |
| 00400 | 013EF | 013F2 | 25F02 | Box 1 |
| 01400 | 023EF | 023F2 | 25F04 | Box 2 |
| 02400 | 033EF | 033F2 | 25F06 | Box 3 |
| 03400 | 043EF | 043F2 | 25F08 | Box 4 |
| 04400 | 053EF | 053F2 | 25F0A | Box 5 |
| 05400 | 063EF | 063F2 | 25F0C | Box 6 |
| 06400 | 073EF | 073F2 | 25F0E | Box 7 |
| 07400 | 083EF | 083F2 | 25F10 | Box 8 |
| 08400 | 093EF | 093F2 | 25F12 | Box 9 |
| 09400 | 0A3EF | 0A3F2 | 25F14 | Box 10 |
| 0A400 | 0B3EF | 0B3F2 | 25F16 | Box 11 |
| 0B400 | 0C3EF | 0C3F2 | 25F18 | Box 12 |
| 0C400 | 0D3EF | 0D3F2 | 25F1A | Box 13 |
| 0D400 | 0E3EF | 0E3F2 | 25F1C | Box 14 |
| 0E400 | 0F3EF | 0F3F2 | 25F1E | Box 15 |
| 0F400 | 103EF | 103F2 | 25F20 | Box 16 |
| 10400 | 113EF | 113F2 | 25F22 | Box 17 |
| 11400 | 123EF | 123F2 | 25F24 | Box 18 |
| 12400 | 133EF | 133F2 | 25F26 | Box 19 |
| 13400 | 143EF | 143F2 | 25F28 | Box 20 |
| 14400 | 153EF | 153F2 | 25F2A | Box 21 |
| 15400 | 163EF | 163F2 | 25F2C | Box 22 |
| 16400 | 173EF | 173F2 | 25F2E | Box 23 |
| 17400 | 183EF | 183F2 | 25F30 | Box 24 |
| 18400 | 18DEB | 18DEE | 25F32 | Inventory |
| 18E00 | 19333 | 19336 | 25F34 | Party Pokemon |
| 19400 | 194AF | 194B2 | 25F36 | Trainer Data |
| 19500 | 195A7 | 195AA | 25F38 | Trainer Position |
| 19600 | 1A937 | 1A93A | 25F3A | Unity Tower and survey stuff |
| 1AA00 | 1B1C3 | 1B1C6 | 25F3C | (30d) |
| 1B200 | 1BF53 | 1BF56 | 25F3E | |
| 1C000 | 1C093 | 1C096 | 25F40 | C-Gear |
| 1C100 | 1C757 | 1C75A | 25F42 | Card Signature Block & ???? |
| 1C800 | 1D293 | 1D296 | 25F44 | Mystery Gift |
| 1D300 | 1D4AB | 1D4AE | 25F46 | |
| 1D500 | 1D8EB | 1D8EE | 25F48 | Chatter |
| 1D900 | 1D95B | 1D95E | 25F4A | Adventure data http://projectpokemon.org/forums/showthread.php?24589-B2W2-General-ROM-Info&p=167300&viewfull=1#post167300 |
| 1DA00 | 1DBDF | 1DBE2 | 25F4C | Trainer Card Records |
| 1DC00 | 1DCA7 | 1DCAA | 25F4E | |
| 1DD00 | 1E15F | 1E162 | 25F50 | (40d) |
| 1E200 | 1F5FF | 1F602 | 25F52 | |
| 1F700 | 1F9A3 | 1F9A6 | 25F54 | Contains flags and references for downloaded data (Musical) |
| 1FA00 | 1FADF | 1FAE2 | 25F56 | Fused Reshiram/Zekrom Storage |
| 1FB00 | 1FE4B | 1FE4E | 25F58 | |
| 1FF00 | 203DF | 203E2 | 25F5A | Const Data Block and Event Flag Block (0x35E is the split) |
| 20400 | 204F7 | 204FA | 25F5C | |
| 20500 | 207FB | 207FE | 25F5E | Tournament Block |
| 20800 | 20893 | 20896 | 25F60 | |
| 20900 | 20C5B | 20C5E | 25F62 | Battle Box Block |
| 20D00 | 20ED3 | 20ED6 | 25F64 | Daycare Block (50d) |
| 20F00 | 210DF | 201E2 | 25F66 | Strength Boulder Status Block |
| 21100 | 211EF | 211F2 | 25F68 | Badge Flags, Money, Trainer Sayings |
| 21200 | 213B3 | 213B6 | 25F6A | Entralink (Level & Powers etc) |
| 21400 | 218DB | 218DE | 25F6C | Pokedex |
| 21900 | 21933 | 21936 | 25F6E | Swarm and other overworld info - 2C - swarm, 2D - repel steps, 2E repel type |
| 21A00 | 21A3B | 21A3E | 25F70 | |
| 21B00 | 21CAB | 21CAE | 25F72 | |
| 21D00 | 2288F | 22892 | 25F74 | |
| 22900 | 229AB | 229AE | 25F76 | Online Records |
| 22A00 | 2324F | 23252 | 25F78 | Area NPC data - encrypted (60d) |
| 23300 | 23583 | 23586 | 25F7A | |
| 23600 | 2360F | 23612 | 25F7C | |
| 23700 | 237A7 | 237AA | 25F7E | |
| 23800 | 2396B | 2396E | 25F80 | |
| 23A00 | 23A7F | 23A82 | 25F82 | |
| 23B00 | 23BFB | 23BFE | 25F84 | Hollow/Rival Block |
| 23C00 | 252A7 | 252AA | 25F86 | Join Avenue Block |
| 25300 | 25797 | 2579A | 25F88 | Medal data |
| 25800 | 2585F | 25862 | 25F8A | Key-related data |
| 25900 | 259FB | 259FE | 25F8C | (70d) |
| 25A00 | 25DE3 | 25DE6 | 25F8E | |
| 25E00 | 25EEF | 25EF2 | 25F90 | |
| 25F00 | 25F93 | 25FA2 | Checksum Block (73d) | |
Download / Extra Content
| Start | End | Checksum | Mirror | Description |
| 4C000 | 4D913 | ~ | ~ | Battle Video (Native) |
| 4DA00 | 4F313 | ~ | ~ | Battle Video (1st Download) |
| 4F400 | 50D13 | ~ | ~ | Battle Video (2nd Download) |
| 50E00 | 52713 | ~ | ~ | Battle Video (3rd Download) |
| 52800 | 54DFF | 54E02 | 54F00 | C-Gear Background |
| 55800 | 6D3FF | 6D342 | 6D500 | Musical Download (narc download) |
| 6D800 | 73A03 | 73A06 | 73B00 | Pokedex Skin |
| 74000 | 7555B | 7555E | 75600 | Hall of Fame (Main); Extra Checksum 0x75600-0x75603 @ 0x75612 |
| 75800 | 76D5B | 76D5E | 76E00 | Hall of Fame (Backup); Extra Checksum 0x76E00-0x76E03 @ 0x76E12 |
| 77000 | 77511 | 77512 | 7B300 | Unknown |
| 7A000 | 7B213 | 7B216 | 7B300 | PWT Download 1; Extra Checksum @ 0x7B312 |
| 7B400 | 7C613 | 7C616 | 7C700 | PWT Download 2; Extra Checksum @ 0x7C712 |
| 7C800 | 7DA13 | 7DA16 | 7DB00 | PWT Download 3; Extra Checksum @ 0x7DB12 |