iFaith can save SHSH blobs for any old iOS firmware currently installed on iPhone, iPad or iPod Touch. You can download iFaith SHSH blobs dumping tool for Windows from below.
iFaith Release Notes:
For iOS 3.1.x/3.2.x/4.0.x/4.1/4.2.1/4.2.6/4.2.7/4.2.8/4.3/4.3.1/4.3.2/4.3.3 /4.3.5/5.0/5.0.1
* Added Apple TV 4.4.4 (9A406a) support.
* TinyUmbrella iOS 4.4.x/5.x.x blobs are now accepted.
* Resolved rare DFU detection issues.
* Resolved issues with 8GB iPhone 4 Models.
* Resolved iPhone 3GS issues with factory certificates/Error 21 that occurred during restore.
* Resolved iOS Detection issues.
* Removed kill-switch that accidentally got distributed in iFaith-v1.4′s public release.
You can follow iPhoneRock on Twitter or join our Facebook fan page to keep updated on the latest jailbreak and unlock news.
The process is the same for all iPhones that come factory unlocked right?