After upgrading my 1.0.2 jailbroken iphone apps are crashing galore and I get a grayed out "no wifi".

This is what I did:

1. Restored my jailbroken 1.0.2 iphone to 1.1.2 (got errors)
2. Restored to 1.0.2 firmware (no errors)
3. upgraded to 1.1.2 (no errors) but...

now the safari, SMS, and Gmaps are failing all the time and the "no wifi" thing. I have since restored several time but nothing helps. What can I do to get everything back to normal. I havent tried jailing braking in 1.1.2... I kinda just want everything back to normal. What can I do. Thank you so much!