Thank you for replying , I figured it out . I had to rename the file after I downloaded it and it seems to work. Unfortunately I had jail broke an old iPhone 3G and upgraded to base band to 6.15 and it was jerky and slow. I believe the 4.2.1 firmware was the guilty party there so I tried to downgrade it and now Im REALLY messed up ! It's bricked and I'm trying to figure out how to restore it but keep getting error messages . AAAGGGHHHHH ! Go figure . I'm pretty new to all this so if you have any ideas I would be very appreciative . Thanks again .