This site works better when there is only one question per question. To the Apple’s Core. Retrieved December 30, I’ve churned through at least a few iPhones technically being “different devices” and have never had a problem restoring a backup from a previous iPhone to a newer one. Home Questions Tags Users Unanswered. Other MANB tags describe each signed image.

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At the first “Verifying iPhone software” iTunes communicates with “gs.

Aptickst+shsh have to disagree on one of your points regarding device backups. From Wikipedia, the free encyclopedia. A bug existing in several bit versions of iOS, though only exploitable in iOS 9.

So from what I understood, there is absolutely no way to downgrade iOS after it is updated? A missing nonce is not treated as a mismatch, allowing the restore to continue and effectively defeating the improved downgrade prevention introduced by APTickets. Retrieved from ” https: If, however, you’re concerned with your data, such as contacts, text messages, photos, etc then updating to iOS 9.

From your question, it seems you’re mainly concerned with wanting to keep or return to iOS 9.

APTicket – The iPhone Wiki

apticket+zhsh The method was later incorporated into futurerestore. Retrieved December 3, Active 3 years, 5 months ago. I guess I was just being extra cautious with regard the OP’s exact scenario.


I’m new to iOS, but in case I wanted to jailbreak later on, I’d like to have that option possible. Retrieved December 30, This brought a way to restore bit devices to jailbreakable firmware, devices that had not seen a jailbreak for signed firmware since the release of Pangu9 for iOS 9. Also I don’t know how to backup APTicket. If those answers do not fully address your question, please ask a new question.

It used to be something that provided some limited advantages for some users, but nowadays the risks far outweigh any advantages. To subvert that system using a man-in-the-middle attackserver requests the unique SHSH blobs from Apple for the jailbroken device and caches those SHSH blobs on servers, so that if a user changes the hosts file on a computer to redirect the SHSH blobs check to cache instead of Apple’s servers, iTunes would be tricked into checking those cached SHSH blobs and allowing the device to be restored to that version.

This signature type shall match one in the first certificate.

apdump – Dump onboard SHSH Blobs without Jailbreak

I have done this too, many times. This method is very effective on WiFi-only models. What You Need to Know”. Lets call these bloobs tags and their strings types. December Learn how and when to remove this template message. Ask Different works best with JavaScript enabled.


apdump – Dump onboard SHSH Blobs without Jailbreak

If that’s the case, then just don’t update. Thanks Brian, that’s exactly my concern. Seems like tag of each element in the SET describes it’s meaning. Ask Blbs is a question and answer site for power users of Apple hardware and software.

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How to save APTicket (SHSH Blobs) From Device For Future Downgrade (No Jailbreak Required)

Retrieved 3 December I’d suggest staying on it for now if jailbreaking may be appealing, otherwise feel free to update. The format of the data is different for bit and bit devices, aptickt+shsh these formats have something in common.

So I guess what I’m saying is that as long as you have done a backup prior to updating iOS, then you will have no reason to ever go back to iOS 9.