Currently your iPhone has been forcibly downgraded from iOS 7 to iOS 6.1.3 without SHSH blobs, but can’t boot still. Please wait till the iOS downgrade is finished. After it’s failed to query SHSH for three times, 3uTools will show you the reminder of forced downgrade. Click “Flash now”, ensure iPhone in DFU mode to begin flash. After it’s downloaded, click “Flash Jailbreak→Pro Flash→Select firmware ” to import the firmware “iOS 6.1.3”. Connect your iPhone to PC, start 3uTools, click “Firmware” to download iOS6.1.3. When you upgrade back to iOS 7.1.2, the device will have service.ģuTools only supports to downgrade iPhone 3,1 (Product type). The iDevice will have no service after you force downgrade, because it skips the activation step. Turn off “Find My iPhone”, or you’ll need to use Apple ID to activate your iPhone after flash. Please backup your phone data before downgrade. Please note that after the forced downgrade, you should use “3uTools tethered boot” to start your iPhone after it’s turned off. Why iOS6.1.3? Because 3uTools Pro Flash supports iOS6.1.3 flash without SHSH blobs, and provides the “forced iOS downgrade”.
But what should you do without SHSH backup? This tutorial can guide you to downgrade iPhone 4 to iOS6.1.3 without SHSH blobs. Actually iPhone 4 with SHSH backup can be downgraded to any compatible firmware using 3uTools. Some users want to downgrade iPhone 4 from iOS7 to iOS6, but Apple has closed its signing.
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