Ok I downloaded and installed "activate MMS2G" from Cydia and when it rebooted my phone, all I get is the Apple logo. Its been like this for the past 30 minutes now and will not do anything. I can turn it off by holding the sleep/wake button and then I press it again to turn it on but it does the same thing. All it does it show the Apple logo and nothing else. I tried to setting my phone in DFU mode but it wont and iTunes will not even recognize the phone. Please help. I have an iPhone 3G with 3.0 installed jailbroken.