Asslam-u-Alikum! (May peace be upon all of you)
While requesting for my certificate and key on dozens of sites like opda and s60certkey.com i was fed up because now no body is giving your certificate so while searching i found some ways of hacking your fon which i have combine to make it very simple to hack your phone even they are on latest firmware. This method is working 100% for me on my new Nokia c5-00 with latest firmware. Its very easy and simple. Just follow the tutorial.
1.Install Norton symbian hack than open it.
go to antivirus---qurantine---- restore all.
uninstall the application from app manager
2.Now install rompatcherplus3.1. open it and apply the patch 'open4all'
3.install the xplorer.
4. copy install server file to ur memory card
***kindly copy the install server file according to your fon version. if you donot know your fon version
go to www.gsmarena.com and on search write your fon model. scroll down and on opertion system there would
be written the version of your fon. For example for my Nokia C5-OO it says symbian s60v3 9.3. So i will copy install server 9.3.
5. open xplorer and move your installserver file to c:sys/bin.
Thats it. restart your fon and use any unsign application. it works 100%.