Hi guys, you are having a Symbian phone OS9, and you're having be in a devided mind as to what to do to install an application without report "certificate error" also hack your phone. Hacking phone is not too hard, but some people don't know how do you should to begin. Now i will explain detail to help you solve those problem.
There are three common methods to hack your symbian OS9 phone, do whatever you think the easiest:
The first method is called HelloOx Hacking Methods.
HelloOX is the easiest and fastest to hack your phone, and it the best tool hacking phone cos' it can hack various of phones and almost new Symbian phone. Before hacking your phone using this methods there is one thing that you should do, that is getting your certificate and key for your phone. Don`t ever think to get this cert and key from somebody else because each phone have their own cert and key according of their IMEI (maybe you don't need it if your phone belong to Pre-FP1 (or Symbian OS9.1) devices and some of phones FP1 (Symbian OS9.2) with old firmwares).