If you lost/forgot your MMC card pasword do the following:
Use any file manager application like for example Seleq of fileExlporer. Go to C:\system\mmcStore. Send this file to your computer and once it is on your computer, change its extension to .txt. Now you can open the file in e.g Windows Notepad - it contains your password.
Dial **7370 on the stanby screen as if you were to call somebody.
Warning: formatting the internal drive result in all data being removed. Use this function oniy if your experience serious problems with your mobile phones. Do not touch anything during the process! It is recommended to only do it with fully chaged battery and your phone connected to charger to ensure that your battery doesn’t run out juice in the middle of formatting.