ok i used itunes to restore then re-jailbroke my iPhone 3g and it's working fine on 3.0 so far, so fingers crossed it'll continue to work well, if not then i guess a downgrade is in order. thanks for all your help guys.
ahaha it seems whenever i try to sync cracked apps then my iPhone's sms function messes up and I'm not sure whether it's a faulty app or the appsync for o.s 3.0 hasn't taken well to my iPhone, either way, I think the easiest solution is to downgrade and wait for 3.1, thanks for all the help
ah seems someone had a similar problem where he couldn't receive calls, any who, a certain genius came up with the solution, so anyone looking here for the solution should go here:
http://www.modmyi.com/forums/general...iphone-2g.html