So.. I was running 4.0.1 on an iphone 4 32gb on contract with AT&T. I jailbroke with jailbreakme.com and installed the usual jailbreak suspects (sbsettings, custom icons, etc.) This is where things went wrong. I activated the phone toggle in SBsettings and after using it a few times my phone began reporting "invalid sim" up where the service is displayed. A respring did not fix the problem and so I did a reboot. After rebooting the phone asked me to connect to itunes and wouldn't let me into the phone. Once I connected, itunes said that the phone was locked with a passcode (which it is) and that I needed to enter it onto the phone in order to connect. I could not enter the passcode, since it wanted me to connect to itunes so I was in a catch-22. I put the phone in DFU mode and did a restore to the same version 4.0.1. Once the restore was done, the phone attempted to activate and hung for a while. Then itunes displayed a message "there is a problem with your iphone" and recommended I take it to apple. The IMEI # has been reset to default and now starts with 0049 on the info screen available on the phone where it asks you to connect to itunes. I cannot get into the phone, and restoring always results in the same outcome even when done on different computers. so... am I totally bricked or is there still hope? I'm open to all suggestions. All of my google searching just brings up iphone 2g posts from 2007 when this was apparently more common. thanks and I would really appreciate any help you can offer. I am a very proficient mac and iphone user and should be able to provide you with any more information should it be needed. thanks in advance.