I've just unlocked severeal iPhones without any problem since today.

I'v e startedt trying to unlock one, everything wen ok, both the AT command gave the right answer and then i close terminal and got to use iASign to change the sim card in the phone... so The program said that it cannot read the sim card (it was mine, the same operating in my personal unlocked iPhone)
Cannot retrieve the ICCID said many time, then i saw the phone and it was fixed on AT&T request for activation
I did the whole operation several time but everytime the answer was the same

Then I got another one, I put the new firmware in it and I started to hack, but I cannot write minicom -s because the terminal disconnet me after writing min...

How cand I handle it??
Please help me