One of the most popular tools around that is used for this purpose is TinyUmbrella, which just received an update to support saving of iOS 5.1.1 SHSH blobs. TinyUmbrella for iOS 5.1.1 is now available for Windows and Mac. TinyUmbrella developer @notcom just announced a few hours ago that his popular tool has been updated to support iOS 5.1.1. 操作十分简单，完成以下步骤即可： －下载最新版本TinyUmbrella（ 点击进入 ） －将iOS设备连接至电脑 －安装并打开最新版本TinyUmbrella（确认标题是v5.11.00） －从“Connected Devices”列表中选择你的iOS设备 －点击“Save SHSH”按键即可.

Apple allows you to restore to the latest iOS versions only to prevent users from downgrading to an older iOS version, which would have made it easier to jailbreak the iOS device. For example: If Apple allowed users to downgrade their device, they could downgrade back to iOS 8.1.2, which was the last iOS software update that could be jailbroken using the and.Apple stops signing the firmware files (by not providing SHSH blobs) for older iOS versions to prevent users from downgrading. Tools like TinyUmbrella have allowed you to save the SHSH blobs, so you can use it to create (stitch) a pre-signed IPSW file, which could then be used to restore your device with an iOS version that Apple was no longer signing.Apple has closed the loophole that allowed users to use the SHSH blobs in newer devices (iPhone 4S and later) and also in iOS 7 or later. So you cannot restore to 6.x using SHSH blobs except on, and (and to iOS 5.x if you have iOS 4.x and iOS 5.x SHS blobs).Despite the lack of support for new iOS versions, it is considered a good practice to take a backup of the SHSH blobs, so if someone discovers a way to hack the restore process in the future to again using the custom IPSW firmware file, then the SHSH blobs would come in handy.Semaphone, developer of TinyUmbrella has recently. He has indicated that it maybe possible to downgrade to older iOS version using the SHSH blobs. Download link for TinyUmbrella:➤(Click on the appropriate download link in the right sidebar under Downloads/Links on the download page).Check our category page for the latest coverage about the tool.

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