cardy - December 31, 2013 at 5:51pm
You could try whited00r 7.
It will automatically jailbreak your device, give it an iOS7 look/feel, reduce it to iOS 3.1.3 making it remarkably faster and give you the option of downloading a selection of apps (like facebook, twitter) which will work on 3.1.3.
Might give your 3g a longer shelf life.
The problem would be that you restore the phone to new so would lose calender, sms, and contact info. But there are simple ways of restoring these if you're interested.