mmc card need some solution

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I have a nokia phone n70 with 512mb of external memory. The memory works properly. One time i installed ngage game to my n70. It used emulator files that needed so that ngage games will work on my n70 phone. Next i installed one ngage game and in order to let this work i have to add some files that will added to my memory card sensetive program/system. I need to add game files at the system, libs, data, prog etc... Adding the files sometimes it involve overwriting important files to run the system of my memory. I backup the folder libs and rename it as libs2 folder so that if the games wont work i can change the libs2 to libs to avoid lost and corrupted file. But i made a mistake my phone went off. And when i turn on my phone wont boot up anymore. I forgot to copy those files that needed to trigger to retrieve data on my memory like exe of themes that i use or settings. But when i pull out my memory the phone boot up its default setting and works fine. While putting back again its mmc causes only to hang up my phone and never boot again. I already format my phone hoping that my phone will able to detect it again but same thing happen it hang up. There isnt no solution anymore if the mmc is inserted. I have only one solution in my mind and i need your help here. Can i reformat my mmc card using voltage? How?For example the capacitor store current while the device is turn on. You must short its two pins to discharged the current.