iOS 9.3.5 downgrade tool for 32-bit devices coming soon

By Joaquim Barbosa on Mar 8, 2017

As some of you may have seen from my tweet yesterday, there is some exciting news afoot for owners of 32-bit devices on iOS 9.

A group of developers including alitek12, ee_csw and Trevor Schmitt have stated that they are working on a downgrade solution which will allow users of legacy devices to escape from iOS 9.3.5 and return to a jailbreakable iOS 9 firmware.

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Prometheus Guide: Introduction

By Joaquim Barbosa on Feb 22, 2017

This is an introductory article which explains how to follow our two-part guide on using the Prometheus downgrade tool.

Before attempting either Part 1 or Part 2 of the guide, everyone should read this article. It explains whether the guides apply to you, and if they do, which ones you should follow, as well as making sure that you fulfil the requirements for them to work. Read More

 

Prometheus Guide Part 1: How to set a nonce with nonceEnabler

By Joaquim Barbosa on Feb 22, 2017

This is Part 1 of a two-part guide on how to use Prometheus.

Before attempting this guide, everyone should read the introductory article, Prometheus Guide: Introduction. This will explain whether the guides apply to you, and if they do, which ones you should follow, as well as making sure that you fulfil the requirements for it to work.

If you currently have a jailbreak and you want to move to a different firmware with Prometheus’ nonceEnabler method, you must follow Parts 1 & 2 of the guide.

If you currently have no jailbreak, and you want to move to a different firmware with Prometheus’ nonce collision method, skip Part 1 and do only Part 2 of the guide. Read More

 

Prometheus Guide Part 2: How to use futurerestore to restore to unsigned firmwares

By Joaquim Barbosa on Feb 22, 2017

This is Part 2 of a two-part guide on how to use Prometheus.

Before attempting this guide, everyone should read the introductory article, Prometheus Guide: Introduction. This will explain whether the guides apply to you, and if they do, which ones you should follow, as well as making sure that you fulfil the requirements for it to work.

If you currently have a jailbreak and you want to move to a different firmware with Prometheus’ nonceEnabler method, you must follow Part 1 of the guide before following Part 2 here.

If you currently have no jailbreak, and you want to move to a different firmware with Prometheus’ nonce collision method, do only this part (Part 2) of the guide. Read More

 

Possible downgrade to iOS 10.2 from iOS 10.2.1 for some users

By Joaquim Barbosa on Feb 20, 2017

Are you are stuck on iOS 10.2.1 or higher, having missed the iOS 10.2 signing window and therefore the Yalu jailbreak? If so, you may be in luck today, provided you have the correct setup. Early reports have come in that some devices are creating nonce collisions on iOS 10.3 b1, providing an indirect route back to iOS 10.2 through Prometheus.

For this clever workaround to come off, you must have a device which produces collisions, namely the iPhone 5s or (possibly, though not confirmed on iOS 10.3 b1), an iPad Air. If you do, you may be able to downgrade from iOS 10.2.1 to iOS 10.2 and jailbreak, by first downloading and installing iOS 10.3 beta 1, and then downgrading to iOS 10.2 using futurerestore.

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iOS 10.2 no longer being signed by Apple makes it impossible to downgrade

By Joaquim Barbosa on Jan 30, 2017

In the last few minutes Apple closed the signing window for iOS 10.2. That means that you can no longer upgrade, downgrade, or restore to that firmware, either over-the-air or through iTunes. You also can no longer save blobs for iOS 10.2 through any tool.

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How to restore your Apple TV

By Joaquim Barbosa on Jan 29, 2017

With all the excitement of the beta jailbreak for iOS 10.2, the Apple TV has (as usual) fallen somewhat by the wayside. However, whilst there has been no definite news concerning a jailbreak for the device, there have been some tentative stirrings suggesting it could be a possibility in the future.

Whilst I wouldn’t take that as gospel at this point, it might be worth non-jailbroken Apple TV 4 users downgrading now from tvOS 10.1.1 to 10.1 just in case. Check out my comprehensive advice guide for more details if you’re not sure whether this applies to you.

This guide will walk you through how to restore any generation of Apple TV. The process comes in handy for upgrading and downgrading to signed firmwares, but also for restoring the device if it has problems or needs a fresh start. Read More

 

How to downgrade (or update) to iOS 10.2

By Joaquim Barbosa on Jan 27, 2017

We recently covered the release of Luca Todesco’s first build of yalu102. This tool will eventually allow all 64-bit devices to jailbreak iOS 10. iPhone 7 and iPhone 7 Plus will be able to use it on iOS 10.0-10.1.1, all other 64-bit devices will be able to use it on iOS 10.0-10.2.

As the signing window for iOS 10.2 could close at any time, the pressure is on to downgrade to iOS 10.2 if you are currently on a higher firmware. Some people on a lower firmware should also upgrade to iOS 10.2, but not everyone. In this guide, we’ll talk you through how to upgrade/downgrade to iOS 10.2 from a lower/higher firmware, if you are one of the people who should be there. Read More

 

iOS 10.2.1 and jailbreaking: what are my options?

By Joaquim Barbosa on Jan 25, 2017

What with the release of iOS 10.2.1 and the soon-to-be-closed signing window for iOS 10.2, many people are wondering what the best strategy is for their device. Should they stick with a jailbroken firmware or jump to iOS 10? If they’re already without a jailbreak, which iOS version do they need to be on to make sure they get one? What do they need to do to be able to upgrade to iOS 10.2 later, and keep their jailbreak for now?

In this article, we’ll quickly go through what we consider the smartest options for each device and iOS version, so that you can (hopefully) make an informed decision.

Extensively updated to reflect beta release of Yalu for 10.2.

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How to verify your .shsh2 blobs with img4tool

By Joaquim Barbosa on Jan 11, 2017

We recently reported how some of the .shsh2 blobs saved with previous versions of tihmstar’s TSSChecker were faulty. One problem affected all iPhone 7 and iPhone 7 Plus blobs, rendering them useless. This issue has now been fixed going forward, though past blobs are invalid.

The other problem was more complex and affected only certain models of certain devices. It is also fixed for blobs saved from now on, but given these occurrences, it is important to be able to check whether the blobs you saved in the past are in fact valid and fit for use with Prometheus.

In this article, we’ll go through how to use another tool from tihmstar’s Prometheus suite, img4tool, to verify that your .shsh2 files are good. This method will clarify whether you are affected by the second problem mentioned above, but will also work in general, when checking the validity of your blobs in future.

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