iSHSHit is a cydia tweak that lets you save SHSH blobs on your iDevice itself, without the need to use a desktop application such as TinyUmbrella. This free Cydia app available in BigBoss repository saves ECID SHSH on your iPhone, iPod Touch, or iPad. It also saves SHSH to Cydia using it’s On File service in the background. This new tweak has updated with the release of the latest iOS that is iOS 4.3 and iOS 4.3.1.
Unlike the more famous TinyUmbrella , a program available for desktop computers (Mac, Windows and Linux) and also works on non-jailbroken devices, iSHSHit can only be installed from Cydia and requires a jailbroken terminal.
You can download and install iSHSHit from BigBoss’s repository