(i didnt' post the files or do all the hard work, I have just put them into the steps to help others)
For all those seeking the 2 magic steps of how to fix your bricked i780:
(1) Download the LOADER: http://www.mediafire.com/?agoddxiwtgq
(2) download the ROM (in this case, the English ROM) - http://www.mediafire.com/?mtmxr1dxzz5
put them both in the same directory and extract both files.
Run the loader, and push 'PDA' and it will select the ROM.
Plug in the USB / sync cable
Switch your phone on and the software will immediately start uploading the ROM.
When its complete, unplug the cable and switch the phone on.
Thats it! There you go! Fixed phone! No need to send it to Samsung!
Its not as east as a hard reset, but it will do!!!