Hi everyone,
first of all I wanna apologize if this serious problem has been solved already. I did use the search function and read already dozens of threads but none solved my problem

.
Since yesterday I've got a pretty big problem which seems to be even bigger than I initially thought.
For a still unknown reason my iPhone suddenly stopped working yesterday.
Since then I can't place or receive any calls anymore and can't use my WLAN either.
Therefore I'm pretty sure that it has something to do with the baseband-firmware, which I never knowingly edited in any way by the way.
First all the facts I can give you.
My iPhone (bought it in the USA and using it in Germany) had originally the firmware 1.1.3 installed. I updated via iTunes to 1.1.4 and jailbreaked it with ZiPhone 3.0.
All that happened at least 3 months ago and since then I've never had any problems whatsoever.
So after getting this problem I went home to connect it to my PC and iTunes.
I tried to restore it with the official option in iTunes.
After a while though this progress just freezed and nothing happened anymore.
After reading in some forums about similar problems I tried all kinds of methods already (I'm not sure whether I acutally made it worse with all my doing).
I also used the "REAL" DFU-Mode (damn what is that in english?) to try to downgrade my iPhone firmware... no success.
When I try to re-install ZiPhone 3.0 or iLiberty+, both programs just freeze after a while and don't do anything anymore.
Now it seems that my iPhone is totally fu**ed up... I can't even turn it on anymore.
Before that I tried to find out my values for IMEI, ICCID or Modem-Firmware.
When I go to settings > general > info those fields are just blank.
Isn't there a way to COMPLETELY reset all settings?
I don't care about my phonebook, songs, images etc. I just wanna have a working iPhone again!
Every help concerning this matter would be VERY appreciated!
I just don't know what to do anymore and thinking already about sending it to Apple, which will probably cost me a small fortune.
Thanks already a dozen for your help,
36 views and no suggestions yet?
Please guys I'm totally out of ideas.
"Help me Obi Wan Kenobi, you're my only hope" :-)