Help with jailbreaking and Cydia for iPhones, iPads, and iPod touches.

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How to fix some mysterious problems.


Hey guys,

I've just today (I know it's so late) tried to downgrade my iphone 6 plus from 8.1.3 to 8.1.2 As far as I know apple is still signing 8.1.2, I've read that you can't have itunes update. So I downgraded that as well to itunes 12.0.1 and there is only one ipsw that I could have and I continue to get( across two windows computers and one mac) an error saying my "...Firmware file is not compatible." I've gone through and erased every last bit of itunes(12.1) before installing old 12.0.1 itunes. To no avail I cannot get it to restore. To add some things you guys might have questions about. (not sure if any of this will make a difference)

-My itunes is empty on my windows computers, brand new, no authorization or files or backups

-I do not have a backup of the device on 8.1.2( I bought it on 8.1.3)

-Find my iphone is off, phone unlocked

-Searched all over reddit and forums to no avail no one has had, and not be able to fix, this specific problem.

Thanks for your help guys

What is the filename of the IPSW? Also what is the size in bytes?

(06 Feb '15, 12:00) iAdam1n ♦ iAdam1n's gravatar image

Phone7,1_8.1.2_12B440_Restore 2.00 GB (2,147,484,579 bytes)

(06 Feb '15, 12:04) CDT6713 CDT6713's gravatar image

Followed this tutorial to downgrade itunes

(06 Feb '15, 12:14) CDT6713 CDT6713's gravatar image

That's why. It should be 2,198,319,532. Get it from here.

(06 Feb '15, 12:16) iAdam1n ♦ iAdam1n's gravatar image

alright thanks man

(06 Feb '15, 12:23) CDT6713 CDT6713's gravatar image
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Asked: 06 Feb '15, 11:47

Seen: 1,973 times

Last updated: 06 Feb '15, 12:23

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