Soft Reset
- Reverts system files to original a.ka factory settings.
- Any changes made to system files will be override.
- Any applications related to system file configurations will fail to work.
- Most standalone applications will work without any problems.
- Memory card data still intact.
Hard Reset
- Full format (brings ure fone as fresh as first time bought.
- Resets system information, such as time / date / location /user data etc.
- All user data and system data will be wiped off completely, including System, Contacts, Messages, Settings etc.
- Memory card data still intact.
Just use the internal Nokia File Manager backup, for Contacts, Messages & Bookmarks only .. dont backup Settings and Userfiles ..
have tried snap pic without rear case cover? just to check if it is lens or casing .. i doubt its flash light leak

hard reset - phone will be virgin again, but the upgreded (v4) will not be downgraded, right?