went 1.1.4 --> 1,2 2.0 firmware.

Restored back to 1,1 2.0 firmware using itunes 7.5, trying to restore down to 1.1.4 gives me a 1015 at the end of the restore process. I have tried it in DFU mode about a dozen times, and in recovery mode about a dozen times.

I can Ziphone after downgrading it, but i have no carrier options and the phone wont pick up any carrier signal.

I have gone through the instructions and suggested walk-throughs enough times in here to know something is not right becuase this is not working.