Notcom has updated TinyUmbrella to version 5.00.06 which now supports iOS 4.3.4, iOS 4.2.9 on all iDevices including iPad 2. You can download TinyUmbrella 5.00.06 to save SHSH blobs for iOS 4.3.4, and iOS 4.2.9.
Along with iOS 4.3.4, Apple has also released iOS 4.2.9 for Verizon iPhone 4 CDMA. You can download iOS 4.2.9 for Verizon iPhone 4 from the link below. Like iOS 4.3.4, the Verizon iPhone 4.2.9 firmware also patches the PDF vulnerability in Mobile Safari exposed by JailbreakMe 3.0, the iOS 4.3.3 jailbreak tool by Comex.