I saw a thread stating 3.1 jailbreak with redsn0w so I quickly upgraded before I found out it lied to me. Here is how I found my ECID after the upgrade. I am running WIN-XP-PRO and use a iPhone 3GS. I ran regedit to open the registry. At the top I highlighted "My Computer". Clicked edit then find and searched for ECID. the first thing it found was the listings for ipsecid. scroll past that list and start your search again from there. Should take you to the following string or similar: HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Enum\USB\Vid_05ac&Pid_1281\CPID:8920_CPRV:14_CPFM:03_SCEP:03_BDID:00_ECID:0000XXXXXXXX0000_IBFL:01_SRNM:[XXXXXXXXXX]_IMEI:[XXXXXXXXXXXXXX] You need the 16 charictures after ECID starting with the 000............ Now you can send it on purplera1n once the site is fixed. Hope this helps.