Need Help Regarding Nokia C1-01 Certificate

Few Weeks Before I Tried To Update Nokia C1-01 Model Version Through Phone Update Option @Mobile Gprs Support...

After Updation My All SMS Unreadable N Undeletable...

Phone Numbers Unreadable...

I Decided To Reset Whole Settings By Factory Settings 1st Time No Success 2nd Time Succeed To Delete My Unreadable SMS N Phonebooks Deletion Etc...

Now Current Problem Is > I Lost Nokia Certificate >

If I Try To Download Some Apts It Showing Nokia Certificate Or SIM Certificate Not Found Like That...

Some1 Tell Me How To ADD Nokia Certificate N SIM Certificate On Nokia C1-01...

Thanks In Advance...

Full Flash Phone and Check...