apple tv stuck on recovery mode

Hi Guys,

I really need your help - this is a brand new apple TV 2

I've received the device with iOS 4.4.4

This happened after I've tried to upgrade the device to version 5.1 through iTunes and it got stuck in the process

When I try to restore through itunes I keep getting error 1611

I've tried:

1. Different computers (2 PCs & 1 Macbook)

2. I've tried to use a different Apple ID

3. I've tried to download the iOS image (version 4.4.4 & 5.1) and restore it manually using the shift key in itunes

--> I've noticed that I cannot put the apple TV in DFU mode it just reset it self back to recovery mode

--> I've also noticed that the computer doesn't recognized the apple tv unless I connect the power cable

Any Ideas?