Following Apple's official release of iOS 4.3.1 yesterday, notcom has updated TinyUmbrella to support the latest version of iOS.
TinyUmbrella version 4.30.05 supports iOS 4.3.1 for all iDevices. Compatibility excludes the Verizon iPhone 4, since Apple has yet to release iOS 4.3.x for the Verizon iPhone.
As a reminder, to save your SHSH blobs, simply connect your iDevice via USB to your computer, launch TinyUmbrella, and click the “Save SHSH” button.