I want to downgrade my ios 6.1.4 to 6.1.3 or 6.1.2?

My iphone model is A1429 it is gsm+cdma now i want to downgrade from 6.1.4 to ios 6.1.3 or 6.1.2 is it possible can you tell the full steps please help me

Http://www.redmondpie.com/downgrade-ios-6.1.4-6.1.3-to-6.0.x-for-jailbreak-on-iphone-5-4s-ipad-ipod-touch-before-it%E2%80%99s-too-late/

NO…

There's NO way to downgrade an iPhone5 at the current time.

There was a VERY limited window when Apple decided to sign older firmware versions but it only lasted for maybe 12 hours. There's NO other method to downgrade an A5 chip device, it doesn't matter what survey you take, it WON'T work…