1.0.2 OTB Updated and unlocked 1.1.3 tried to downgrade/Virginize to 1.1.1 now DEAD

I bought an 1.0.2 iphone. i managed to get to 1.1.3. but i didnt like some bugs i find. so i wanted to downgrade to 1.1.1 with i.unlock.no tutorial. i did baseband downgrader, virginizer. now i have the picture of the cable and the itunes logo (recovery mode) and no matter what firmware i use (i ve tryed them all) it says ERROR 1604/3 After installing. and keeps on the recovery mode. ive also tryed apptap to get it working but is not helping at all. really dont know what to do.
thanks

What sort of bugs in 1.1.3?

Error 1604:
http://docs.info.apple.com/article.html?artnum=307007

Try upgrading your phone to 1.1.3 and use Ziphone 2.x to unlock. If you have any problems then post them here and people will be help you out.

1603 means you need to reboot your computer.