Since Apple has patched JailbreakMe 3.0 exploit in iOS 4.3.4 update, users are now waiting for the next untethered jailbreak. But unfortunately, iPhone Dev team members have said that iOS 4.3.4 (untethered) jailbreak will not come out soon.
So, now it’s safe to be on iOS 4.3.3 firmware. However, you don’t want to wait till the next jailbreak release, you can download iOS 4.3.4 from here. To make things easier for such users, Notcom has released TinyUmbrella update (5.00.05), which will allow you to save iOS 4.3.4 SHSH blobs of your iDevices.
You can also save SHSH blobs of previous firmwares if Apple is still signing those builds. As noted by the developer, people who face issues with this software should uncheck “Request SHSH from Cydia” in the advanced tab.
Verizon iPhone 4 users can also save SHSH blobs of iOS 4.2.9 update with this tool.
Download TinyUmbrella 5.00.05 to save iOS 4.3.4 SHSH blobs
[We've removed the downloadable links from our site due to policy violation issues. Sorry for the inconvenience.]