How to Unlock Password Protected Memory Cards Without Formatting First of all, Download FExplorer in to your mobile phone. Now run FExplorer and go to C: drive first. Now get into C:System folder. Search for the mmcstore file name and copy this file into your computer. Now open this file with Notepad in your computer. Now you will be able to see the memory card password in this notepad file. That’s it! Yet there is no such method to unlock memory card password of latest Nokia s60 series, E-series and N-series mobile phones without formatting.