Okay so I am going to explain everything from the very start so you guys don't have to ask me anything.
First of all I bought a JB and Unlocked Iphone 3g 3.0 from a dude. So my girlfriend has Ipod Touch and she wanted to jailbreak her Ipod and I helped her to do it and it worked nice. The we tried to install cracked apps on her Ipod and that worked to, then I tried to install cracked apps to my Iphone and it didn't work. Then after some time i decided to restore it and Jailbreak it again, which I did and my Iphone seemed to work fine. Cydia was installed and everything else to. Next day i was on my iTunes and tried to sync the cracked apps again and again I got the same error with all the cracked games:
The application "Name of the app" was not installed on the "Iphone 3G" because of an unknown error occurred (0xE800067).
Then I decided that yeah I maybe need some other things for Cydia and installed: AppSyns and Installous.
And now I can't even sync a AppStore application onto my Iphone trough iTunes!
Then I checked the guide on a website where the guy in the guide said:
1. You need an Iphone 2g/3g that is JB and has Cydia installed (CHECK!)
2. You must have download and installed at least ONE item from AppStore.
So as the guy said I tried to download a app trough my Iphone from AppStore. My iPhone opened the AppStore nice and clean then i selected an app that was free and clicked "install" then i was returned to homescreen where I saw the icon of the app and a bar beneath it that was progressing and it said "loading" when the bar was half full it jumped to the end and it gave me an error saying that the app couldnt be installed but i still can do it from AppStore trough my ITunes on my PC.
So I can't install any apps on my phone if it's not from Cydia. Only Cydia apps work.
Can you please help me out with this PLEASE?! And as fast as possible?