pokemon ruby on the mother3 gba cart settings

in the patcher I used:
savetype
offspec 512k / 1m flash (for carts with a non standard flash chip)
enabled fake RTC
in flash gbx:
savetype: 512k FLASH (64kib)
dont need to keep the original rom like castlevania did, instead use the patched rom for everything
patched rom can load the saves. the original wont recognize the saves.
It says the last save was corrupted each time but it works fine