iPhone 3.0 latest version

Hi all my iPhone has decided to brick it self this morning and has told me that I need to upgrade to the newest version which I am pretty much sure I was already running... I have just tried to reinstall iPhone1,2_3.0_7A300 using iTunes Version: 8.2 (8.2b7) and I just the same problem! is anyone else having the same problem or have any ideas? any help would be much appreciated

the reason you expired is that is not the current version you need 7A312f i believe and the next beta 8.2b10 for itunes if that helps any