Hi guys , I've a 2g iphone that after an installation of bad application (mobileinstaller for 3.o) don't go on:it turn normally with apple logo but then appear the icon of wait and it don't turn on...after few minute it restart..I cannot restore with iTunes because there's an 1604 error(just pgrade 3.0)...but the phone is read by pc and iTunes..somebody said to me that the logic board is gone .. ..what think you??thanks

I forgot to tell you that the 3.0 was jb & ul by redsnow (it comunicate with phone too)...