problem with the R4i

my r4i keeps deleting sav files ever since i had to format it help me!

Reinstall the latest firmware after formatting again. Otherwise the MicroSD could be bad.

okay ive done that and its just mario and luigi bowsers inside story that keeps deletin sav everything else is fine

It would have helped if you stated that in the first post ;) Read this thread, post all similar queries there as well. https://www.romulation.org/forum/index.php?topic=22731.0