I recently downloaded and updated my iPhone 3G with the 3.0 software and here are my problems/questions.. 1.Push- doesn't work at all ( shouldn't it work with such apps as facebook and AIM?) 2. MMS- everytime I try to send a MMS it says "failed" or "unable to send". 3. Stereo Bluetooth doesn't work. Am I doing something wrong or what? I understand this is Beta software but I thought these features worked. Also is there a way to downgrade to 2.2.1?