Few days back Notcom released TinyUmbrella (TU) 5.10.04 with preemptive support for iPhone 4S 9A406 but Windows users pointed out for a problem of TU crash on startup, so that TinyUmbrella 5.10.05 update is available now with fix.

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How to Save SHSH Blobs with TinyUmbrella

Those who are not familiar with TinyUmbrella, this tool works to save SHSH blob for iDevices including iPhone, iPod Touch, iPad and Apple TV from Apple Server and Cydia which are required to downgrade iDevice firmware to an older version.

Download TinyUmbrella 5.10.05 for Windows
Download TinyUmbrella 5.10.05 for Mac OS X