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so shsh for 6.1.2 and 6.1 are not valid,ifaith says something about "aptickets" or something like that,it is strange that I can downgrade to 6.1.2 with those shsh files,but every reboot or power off,I have to do a tethered boot,so I guess that this is a tethered downgrade
 
I did not understand, how downgrade than ios 6.1.3 to ios 6.1.2?

Download the latest version of iFaith (v1.5.6) and run it. Plug in your iPhone 3GS/4 and click "show available shsh caches on server". After it finds it, save them.

See if it marks them as valid or not. If its not valid, you cannot downgrade your iPhone to 6.1.2 from 6.1.3
 
Download the latest version of iFaith (v1.5.6) and run it. Plug in your iPhone 3GS/4 and click "show available shsh caches on server". After it finds it, save them.

See if it marks them as valid or not. If its not valid, you cannot downgrade your iPhone to 6.1.2 from 6.1.3

He can downgrade with those broken shsh but it will be a tethered downgrade.
 
Okay, the shsh is not valid .... But if the shsh were valid, how would I do downgrade?
 
Okay, the shsh is not valid .... But if the shsh were valid, how would I do downgrade?

you can only downgrade tethered on 6.1.2 but it is better to be tethered jailbroken on 6.1.3,believe me,I downgraded my iphone once to 4.3.3,it was tethered and no shsh,don't ask my how I did it but i did it,the point is that the device may become unstable slow or battery issues so just jailbreak tethered on 6.1.3,plus,the battery is better.
 
But let's say that someone that his shsh valid How can he downgrade?
 
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