How to Sign Unsigned Symbian Software - III

Secman Settings

Step 3:

Now Secman should be on your phone like this:

Open SecMan,go to Options and select "Turn Plat Security OFF". Like this.

Important: You will need to turn "Turn Plat Security ON" if you before installing any N-Gage game, else it will not work.

Then, go to Options again and select "Install ROOT Certificate". Like this.