I couldn't save my games and when i powered off and on again to play other games, i keep getting Sram check error message. From the other forum, i learned to delete the "last save" file from the DS system but still the problem persists. When i did a battery test, i got SRam.sav not found. I have done a full format and upgrade to the new version but still to no avail. Would appreciate any advice. Thanks!! Posts merged Forgot to add that i always gets the message 'Data cannot be accessed. Please power off and insert game card again." after i finish a game.