PushFix.info has launched Blacksn0w RC2 to unlock iPhone 3.1.3 with base band 05.11.07. Original Blacksn0w and the fixes are included in Blacksnow RC2 which was launched a few days ago to unlock iPhone 3.1.3 with base band 05.11.07.
To use this software you have to visit http://cydia.pushfix.info/ from your device.
Blacksn0w RC2 Instructions to unlock your iPhone
1- Blacksn0w RC2 first checks your real firmware version using your kernel version. It only installs if you are really running 3.1.2 or 3.1.3.
2- Checks your baseband version and only installs if 05.11.07.
3- Properly backs up and restores your configuration if uninstalled.
Click the link to unlock iphone 4