TinyUmbrella 4.21.07 Released – Safely Upgrade to iOS 4.2.1

tiny_umbrella logoNotcom the creator of TinyUmbrella released version 4.21.07 for safe upgrade to iOS 4.2.1 Firmware for untethered jailbreak with Greenpoison RC5_2 . With TinyUmbrella you can upgrade to the latest firmware [4.2.1] and still retain the old unlockable baseband [1.59.00] on your iPhone 4 which can be later unlocked via UltraSn0w .

Get the latest version of TinyUmbrella 4.21.07 from here [Mac] [Windows]. Follow the iOS 4.2.1 Upgrade Tutorial for detailed step by step process .

Update : TinyUmbrella 4.21.08 has been released . The latest release supports saving SHSH Blobs on Verizon iPhone 4 on iOS 4.2.6 Firmware . You can download it here [Mac] [Windows]

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