Hi, I've had a jailbroken 1.1.2 otb for some time and have been waiting to get a credit card. Now that I have it I want to activate the phone on the O2 network. I have searched (no longer than an hour I admit) for a guide (if required) to do this. I would like to know;

1. Can I just activate through iTunes as normal, or are there any steps I need to go through before that?

2. Is there a chance it will update my phone to 1.1.3 without asking?

3. What steps will I need to go through to get 3rd party apps running again?

Hope I wasn't totally blind and get flamed!