Memory Card lock Error After Software Upgradation In Nokia2700

I have Nokia 2700 classic. I have updated its software. After that, when I inserted micro SD card memory card, its showing that memory card is locked and it needs password. (I never set any password previously) I searched a lot on internet about this. Many of them have mentioned that I have to install F Explorer on my phone which will help to recover password. but Nokia 2700 classic is JAVA based phone and it doesn't support Symbian software.


Can anyone help me to unlock memory card, without loosing data on it ???

Urgent Help Needed!!

There is password protection feature from Nokia for cards. You may have encrypted your Memory card content , since your phone software is upgraded, you need to provide access details again. Or simply insert it in computer and format it. I ma not sure if it can cracked and you get your content back.