How to Downgrade iPhone 4 from iOS7 to iOS6.1.3 without SHSH Blobs Using 3uTools?

3uTools is a comprehensive iOS tool, currently supporting iOS9-9.0.2, iOS8-8.4, iOS7-7.1.2, iOS6-6.15, iOS5-5.11 and iOS4-4.3.5 untethered jailbreak...

1. What does the “3uTools Flash” mean? 3uTools Flash can restore all iOS devices to the...

This tutorial is majorly about how to backup SHSH blobs and upload the local SHSH blobs. SHSH is the key to restoring, downgrading and upgrading iOS devices. The iPhone 4 with SHSH file backups can be downgraded to any compatible...

What are the three modes of iPhone, iPad and iPod Touch? Actually they are respectively normal mode, recovery mode and DFU mode. Then what can we do with the iOS devices in these three devices? How to put them in DFU mode,...

You can use 3uTools to find the UDID of iOS devices, including iPhone, iPad and iPod touch in a very simple way...

How to Recover an iPhone out of disabled mode using 3uTools? This tutorial of exiting disabled mode is only for iPhone 3G, 3GS and 4, and you can recover these disabled Apple mobile devices without iTunes.

Please note that this tutorial is only for iPhone 4 and 3GS, which run the system versions lower than iOS7.0, with 4-bit passwords! 3uTools can’t only jailbreak and flash iOS devices, but also provide a variety of useful...

Notes before flash:Please use iTunes to backup your important data before flash. Please directly connect your device to the computer via the USB cable, and don't use the extension cable or front USB. Ensure you remember your...