This is a Tsunami which has been signed by me by my Universal Developer Key(I'm an app developer with registered certificate). No need to sign by your certificate or hack your phone. I find all the tsunami here are unsigned and people face cert error! So i upload this signed tsunami. If u have previous version of any tsunami uninstall it and then install this. Need help? Post here.
If u need any app to be signed then mail it to me at email@example.com. I'll sign it for u and it will work on any nokia mobile.