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.
By Joaquim Barbosa on Jan 11, 2017
Developer Jonathan Seals recently released a new piece of work called CoolBooter, an interesting tool which allows some 32-bit devices to dual-boot different iOS firmwares. With a simple reboot it can allow, for example, switching between iOS 6 and iOS 9. Whilst this functionality is commonplace in the desktop computing world, booting multiple operating systems on iOS devices is much rarer.
Sebastien and I talked briefly about the tool on Let’s Talk Jailbreak 157, and in this article I’ll give some more info, as well as a video demonstration of it in action. Read More
By Joaquim Barbosa on Jan 6, 2017
It seems tihmstar has been busy putting right the flaws in his suite of tools; just one week after he revealed that a bug in his .shsh2 saving tool TSSChecker had led to all iPhone 7(+) blobs saved with it being invalid, a new update restores the ability to correctly save blobs on Apple’s most recent flagship device. Read More
By Joaquim Barbosa on Jan 3, 2017
It’s been a busy period for tihmstar’s suite of tools since the release of Prometheus during the 33c3 convention. Both TSSChecker and Prometheus have seen some problems, as well as updates in the intervening period, and this article will bring you up to date with their current statuses. Read More
By Joaquim Barbosa on Dec 30, 2016
Update: tihmstar has stated that the tool is working perfectly, and that he has used it successfully multiple times today. However, some users have been encountering a TSS server error when using the tool nonetheless.
Hot on the heels of Prometheus’ release at the 33c3 convention two days ago, tihmstar’s tool for upgrading and downgrading to unsigned iOS firmwares seems already to have hit a snag. Following some changes to Apple’s TSS servers today, the nature of which are yet to be investigated, the tool has been rendered non-functional at the present time. Read More
By Joaquim Barbosa on Dec 28, 2016
Today hacker tihmstar released his tool Prometheus, which can be used (in some cases), to upgrade or downgrade iOS to currently unsigned firmwares.
The tool is not foolproof however, so in this article I’ll briefly explain what its limitations are and how to follow tihmstar’s guidance on the tool.
By Joaquim Barbosa on Dec 20, 2016
A couple of days ago, we covered how to save your .shsh2 blobs manually with tsschecker, and many of you have reported back saying you managed to successfully grab them. However, if you haven’t got them yet and don’t feel tech-savvy enough to mess around with the Terminal commands required, you can try this online tool instead which should save them for you.
By Joaquim Barbosa on Dec 18, 2016
As reported on iDB earlier, iOS hacker tihmstar has announced a New Year’s Eve release of his new tool Prometheus, which can downgrade/upgrade devices to unsigned firmwares, subject to certain requirements.
The main prerequisite for using the tool is having the APTicket/.shsh for the firmware you want to go to, but the process for saving these has changed. You must now use his tool tsschecker to correctly save the files, dubbed .shsh2. This guide will walk you through how to do it. Read More
By Joaquim Barbosa on Dec 18, 2016
iOS hacker tihmstar has announced the upcoming release of his tool Prometheus. And no, it doesn’t steal fire from the gods for you to foster the burgeoning potential of your race. Instead, he claims it will be the first tool capable of upgrading and downgrading 64-bit iOS devices to unsigned firmwares.
If successful, this would be welcome news for the jailbreak community, allowing movement between firmwares for which you have saved your blobs, even after Apple’s signing windows have closed. Read More
By Joaquim Barbosa on Dec 16, 2016
With the news of a possible upcoming jailbreak for iOS 10.1.1, the race is on for those who have already upgraded past it to downgrade before Apple closes the signing window on them and leaves them high and dry. This guide will walk you through how to return to iOS 10.1.1 from iOS 10.2 (or any other version you may be on, like iOS 9.3.3 or iOS 10.1) so that you will be safe and sound when the window closes, and can wait and see if this jailbreak hype comes true.
By Anthony Bouchard on Sep 5, 2016
A new teaser video has surfaced on YouTube that appears to show an iPhone 5s being successfully downgraded from iOS 9.3.5 to iOS 9.3.2.
The video demonstrates the use of a third-party tool that the creator is calling Prometheus, but it also brings up a lot of questions that still have yet to be answered. Read More
By Sébastien Page on Aug 24, 2016
Nearly three weeks after releasing iOS 9.3.4, Apple has closed the signing window for iOS 9.3.3 and iOS 9.3.2, making it impossible to downgrade from the latest firmware version available to these older ones. Read More
By Anthony Bouchard on Jun 10, 2016
Apple has officially pulled the plug for signing iOS 9.3.1 on Friday.
The change means iPhone, iPod touch, and iPad users can no longer downgrade to iOS 9.3.1 via iTunes and will now be forced to install iOS 9.3.2 upon any attempts to restore their devices. Read More
By Anthony Bouchard on Apr 18, 2016
On Monday, Apple has pulled the signing plug on its iOS 9.3 firmware for its lineup of iPhones, iPod touches, and iPads.
As a result, downgrades through iTunes to iOS 9.3 are no longer possible, and there’s no way to upgrade specifically to iOS 9.3 from an earlier firmware.
Instead, users will be directed to install iOS 9.3.1 when restoring or updating their devices through iTunes.
Update: It seems that not all versions of iOS 9.3 have stopped being signed. It appears that iOS 9.3 is not being any longer for newer devices (i.e. iPhone 6s, iPad Air 2), but it is still being signed for older devices (ie. iPhone 5s). Read More
By Anthony Bouchard on Feb 4, 2016
Apple stopped signing iOS 9.2 firmware for iPhones, iPads, and iPod touches on Thursday, a move that prevents users from performing downgrades from iOS 9.2.1 to iOS 9.2 via iTunes.
By Jeff Benjamin on Jan 5, 2016
Late last year, we showed you how to downgrade App Store apps directly from Apple using iTunes. The method was anything but straightforward, but it did indeed work.
Today, I’d like to show you a brand new method for downgrading App Store apps. Not only is it much easier than the old method, but it runs right on your iPhone, so no computer is required. The only “downside” is that you must be jailbroken to use this method, as it relies on a jailbreak tweak that’s now in beta. That said, it’s way easier than the prior method that doesn’t require a jailbreak.
Want to see how easy it is to downgrade virtually any App Store app using only a jailbroken iPhone? Watch our video and see UnlimApp’s new jailbreak tweak, App Admin, in action. Read More
By Jeff Benjamin on Dec 25, 2015
Charles Proxy is a tool for OS X that can be used to facilitate the download of older versions of iOS apps from iTunes. It’s a bit of a drawn-out exercise, but if you’ve ever been in need of an older version of a particular app, then you know how handy such a technique can be. In this video, which was inspired by this Reddit post, I’ll show you how to download older iOS apps directly from iTunes on Mac. Read More
By Sébastien Page on Oct 29, 2015
Apple has stopped signing all versions of iOS 9.0.2 for iPhone, iPad, and iPod touch this afternoon. As always, the closing of this signing window makes downgrading to this software version impossible.
Users who jailbreak their devices are the ones to get most likely affected by this situation. With downgrading now impossible, jailbreak users must be careful to not accidentally update to iOS 9.1 and lose their jailbreak in the process.
By Jeff Benjamin on Oct 23, 2015
Maybe it was the new emoji that tempted you? Or maybe you just made a mistake? Whatever the reason, you’ve found yourself on iOS 9.1, but wish to go back to iOS 9.0.2—the last jailbreakable firmware that’s currently available for iOS 9. Fortunately, you still have time to downgrade back to iOS 9.0.2.
In this video tutorial, we’ll show you how easy it is to downgrade from iOS 9.1 to iOS 9.0.2. But act quickly, this tutorial certainly has an expiration date, which will occur when Apple closes the 9.0.2 signing window. Read More
By Jeff Benjamin on Aug 18, 2015
Apple is still signing iOS 8.4. That’s not an anomaly, as Apple usually waits a while before it slams the door for good on older firmware. It’s now been nearly a week since the exploit-killing iOS 8.4.1 was released, so time is definitely not on the side of those wishing to downgrade (or upgrade) to iOS 8.4 and enjoy a crisp new jailbreak.
We’ve emphasized this several times already, but now it’s really serious and now it’s really crunch time.
What should you do? Read More