How do you unprotect memorycard?
You cant because its protected all the time no one can unprotect a memory card sorry.
In Excel 2007 and newer, click on the Review tab and select Unprotect Sheet. If you see Protect Sheet instead of Unprotect Sheet, then the worksheet is not password protected. In Excel 2003 and earlier, follow this menu string: Tools --> Protection --> Unprotect Sheet If the worksheet has a password, you will need to enter the password to unprotect the worksheet. If there is no password, just leave the password section blank.