For those starring and waiting how to unlock iphone 4 and 3gs with 4.3.1

Now this is for all the users who have saved their shsh or bb(baseband).

IPHONE 4 Users

Step 1(Jailbreak):
*. Download sn0wbreeze
*. Download IOS 4.3.1
*. Now use sn0wbreeze and make a custom firmware by simple method..
*. With iphone on pwnd mode restore iphone 4 custom firmware.
You will see cydia on iphone 4 homescreen

Step 2(Unlock):
*. From cydia- Manage - Sources - Edit - Add -http://cydia.pushfix.info/
*. Let cydia to download packages and refresh
*. Install Ultrasn0wfix under pushfix repo
*. It will automatically install ultrasn0w
*. Your iphone will reboot and you will have unlocked iphone...
Note: For without wifi users download cyder2.0
And follow the same procedure connecting iphone to pc

IPHONE 3gs Users:

Step 1(Jailbreak):
*. Download sn0wbreeze
*. Download IOS 4.3.1
*. Now use sn0wbreeze and make a custom firmware by simple method..
*. With iphone on pwnd mode restore iphone 3gs custom firmware.
You will see cydia on iphone 3gs homescreen

Step 2(Unlock):
*. From cydia- Manage - Sources - Edit - Add -http://cydia.pushfix.info/
*. Let cydia to download packages and refresh
*. Install Ultrasn0wfix under pushfix repo
*. It will automatically install ultrasn0w
*. Your iphone will reboot and you will have unlocked iphone...
Note: For without wifi users download cyder2.0
And follow the same procedure connecting iphone to pc