iphone 3gs ERROR [2005] when trying to downgrade in itunes. stock in recovery mode

[bluecognit]

iphone 3gs 8gb
dell inspiron 531 windows vista sp2


i have and iphone 3gs and i wanted to flash it to tmobile, so i download 4.3.3. and used redsn0w to do it.
i chose the "update to ipad baseband" option,, i got passed the pineapple screen then it went to recovery mode ,, connect to itunes


i tried entering dfu mode and out,, with no success
i tried reestoring with itunes but got error 3194,,, i looked up and tried starting tss with tiny umbrella , and i got rid of the 3194 but now i get 2005

i tried looking around to fix this one but i got no luck

iphone is on recovery mode with the connect to itunes and wont get off it no matter what

i need help with this one please,, its a customer im doing it for so i cant give it back like that,,,, i feel dead


thanksssssssssss

 

[rjab]

try restoring from other computer..........this might help!

 

[gretar]

Hmm try holding down the home and power button for 30 secs (remember to unplug it before)