i just did the jailbreak using redsh0w for the iphone 3g 3.0 when opening cydia it asks of 2 essential upgrades when i click to complete upgrades i get a error message saying sub-process/usr/bin/dpkg returned an error code 2 im new to the whole jailbreak process and not sure what i did wrong it loaded fine up until i tried to install an app can someone please help me with this.