No push notifications with downgraded 3G

[andii3]

I downgraded my iPhone 3G to 3.1.3, which previously had cydia[so it mustve been jailbroken) It's not there anymore. It used to be OS4, and was painfully slow, but I realized even with all notifications turned on,(settings and on aim/textfree apps) it's not working. How do I get those notifications working?

I am also wondering if I could get it jailbroken again? And if its possible to fix this using cydia on a downgraded 3G?

 

[andii3]

solution

In case anybody's searching;
"Spirit jailbreak" works for iphone3G 3.1.3 to get cydia

To get the app pushdoctor, I had to go to manage sources and type in an url, and then go to general search