iPhone 3g Problems with Restoring - Won't boot past apple logo
I purchased an iPhone 3g on craigslist that was stuck not being able to boot past the apple logo as I thought I could fix it. I have tried to update and restore and it appears to be successful but then the iphone still hangs on the apple logo. I have also tried to (option-click) and install a 4.2.1 ipsw that I downloaded online. I have tried the restore from both DFU and Recovery mode but I can't get the phone to boot up.
iTunes Version: 10.5b112
iOS: I believe to be 4.2.1
Platform: Mac OS X Lion
Last iTunes Restore Log: iPhone Updater Log - Pastebin.com
Any help would be appreciated, Thanks in advance.