How To Downgrade iOS 7.1.2 To iOS 6.1.2 iPhone 4. You know you can Tether Downgrade iOS 7.1.2 To iOS 6.1.2 with No SHSH Blobs works on iPhone 4 iPod Touch 4 and iPad 1, the developer release GeekGrade which gives you the ability to downgrade your iPhone 4 (GSM, CDMA, and Rev A) and your iPod Touch 4 Generation, but the only problem is tethered. it means that every time you turn off your device, you will need to boot it with software so it can boot up. You can boot tether your device with redsn0w or GeekSn0w.
You can download the downgrade software from here:
How To Downgrade iOS 7.1.2 To iOS 6.1.2 iPhone 4 with GeekGrade
This tools can give you a new life to your device, special if its icloud lock, you must try this method to unlock it. I will share a video explaining all this process. How To Tether Downgrade iOS 7.1.2 To iOS 6.1.2 – 6 Without SHSH Blobs iPhone 4 using geekgrade.
How To Downgrade iOS 7.1.2 To iOS 6.1.2 iphone 4 [tutorial, iPhone 4 owners can downgrade their devices from ios 7.1.2 to ios 6.1.2 or ios 6.1.3 without using shsh blobs, u will need iTunes 11.0.5 and custom ios 6.1.2 / 6.1.3 ipsw firmware. How to downgrade official ios 8.1.2 to ios 8.1.1 iphone, Here’s a complete step-by-step guide on how to downgrade ios 8.1.2 to ios 8.1.1 on iPhone, ipad and ipod touch. complete details can be found right here.
Downgrade from ios 6.1.3 to ios 6.1.2 iphone 4 / 3gs, Tutorial on how to downgrade ios 6.1.3 to ios 6.1.2 firmware on iPhone 4, 3gs and ipod touch 4g with shsh blobs for ios 6.1.2 to jailbreak it with evasi0n.
You can also check this post to icloud bypass method using Tether Downgrade: