Notcom has released an update to TinyUmbrella which has support for iOS 5.1.1 (9B208) for iPhone 4 GSM .
TinyUmbrella is required to save SHSH blobs so that you can downgrade to an older firmware later if required.If Apple releases a new iOS firmware update it will stop signing it and you will not be able to acquire the SHSH blobs so it is better to save it before it gets too late.
How to Save SHSH Blobs for iOS devices
Download the latest version of TinyUmbrella from the direct links below.
Connect your device to the computer.
TinyUmbrella will detect your device.Now, simply click on save SHSH option.
It is recommended that you save SHSH blobs using TinyUmbrella even if you don’t have a jailbroken device.
Also Read: Download Absinthe 2.0.2 For iPhone 4 GSM (Build 9B208)
Download TinyUmbrella 5.11.01 for Windows & Mac OS X