Item description:

This patch changes the save file read and write routines of the game to only write to 512Kb of Flash memory instead of the 1Mb Flash memory a real cartridge would have. This is useful for emulators, flash cards, or devices (eg. the 3DS’ AGB_FIRM) that cannot handle 1Mb Flash memory. This works because the majority of the original game’s save file is used as a backup in case of corruption. By removing this and changing a few other small things, we can cleanly save to and load from a 512Kb save file.

In particular, this avoids the save corruption message after the title screen, allows the game to save correctly after the Elite 4, and allows the game to save data outside of the main save file (Hall of Fame and Battle Frontier Battle Recording) correctly.

It is not recommended to use this patch if the device or emulator you plan on using already supports 1Mb Flash memory correctly.

If you want to use an existing save file from the original game with this patch, or want to use a save file from this patch with the original game, run the included save conversion tool on the save file. It can convert saves both ways, though obviously the 1Mb to 512Kb direction is slightly lossy.