unlock iphone 3.1.2 with baseband 05-11-07

Here is the step by step guide to unlock and jailbreak iPhone 3G and 3GS 3.1.2 baseband 05.11.07 using blacksnow (or blacksn0w):

blackra1n blacksn0w:

For iPhone 2G/3G and 3GS:

1. 1st Update your iPhone to new FW 3.1.2 directly using iTunes or by using the direct download links or if you already have 3.1.2 then update using shift+restore on iTunes.It is better to directly update your device using iTunes.

2. Download and install Blackra1n RC3 from http://www.blackra1n.com.

3. Connect your iphone via USB with your computer.

4. Run the software to Ra1n your iPhone (Click the “make it ra1n” icon).Its Takes about 30 seconds to 1 minute.

5. now open blackra1n icon in your iphone.

6. select cydia and blacksn0w and install

7. enjoy your unlock iphone

.