Save your SHSH before updating to iOS 4.2.1!


Before you update your iPod/iPhone’s firmware to iOS 4.2.1, I strongly recommend that you save the SHSH blobs for iOS 4.1 in case you ever want to downgrade back to 4.1. You can use a utility called TinyUmbrella to save the shsh for your device. TinyUmbrella is available for Mac OS X, Windows and Linux.

TinyUmbrella Homepage

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