Can't save on Time Hollow

When I try to save the game says "save complete",but the file isn't there,I stop the game and when I go play it again the save is not there,does this happen with anyone else?Does someone know how to fix that?I use the R4I3D

Update your R4.

So if update my r4 with the last update on the site,that is "3DS_v6.20_upgrade_package",the game will work on my DS and save normally?