[DiabloBlue]

Hello All.

Here is the situation:
Problem 1:
I had a perfectly working iPhone 3GS with OS 3.0 factory unlocked and jailbroken. The I decided to update to OS 3.1.2 which I did. After updating to OS 3.1.2 the phone keeps stuck in usb to Itunes logo screen with only Emergency Calls allowed (This is problem 1)

Problem 2:
To fix "Problem 1" I downloaded a Custom (jailbroken/activated) firmware version of OS 3.1.2 . Now when I attempt to "restore" to this custom firmware in Itunes but I keep getting Error 1600 . Please bare in mind that I attempted restore from both "Recovery" and "DFU" modes but with the same outcome "Error 1600"

I have posted this problem here after searching and researching this issue over the internet but obviously no success so far

Any one for this challenge?