Chosen Solution
Hello, i have problem with downgrade iPhone 4s (it is no jb phone, all parts is original, never replaceced, never have problem with phone). I download version 6.1.3 ipsw and tryed do downgrade in iTunes on two notebook with win10 and one MacBook Air. Try in dfu mode, with only one device, in usb 2.0, with original cable, newest itunes version and 3utools. Result is one: it is stuck on bar progress at start and message in iTunes: “waiting for iphone” when i exit from dfu iTunes say that it is Error 9. In 3utools have message: „waiting for NAND %” Error enable to restore idevice (-1) I tryed on two oem apple cable (little demage) and one noname cable - with this cable i can restore phone to 9.3.5 version thats mean that its ok… Please help.
You cant downgrade iphones to older versions if the phone has been updated. With iPhone 4 and 4s it is doable but only if you have saved the SHSH blobs which are basically authorization keys that allow you to restore a certain iOS version that you either have or had previously.
I don’t agree with the first answer. Apple reopened iOS 6.1.3 for iPhone 4s, you can downgrade to iOS 6.1.3. But if your iPhone 4s is 8GB 2015, you can not restore to iOS 6.1.3, cause the default factory iOS version of this iPhone 4s is iOS 7.1.2.
