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The original was posted on /r/jailbreak by /u/y08wilm1 on 2024-03-29 01:00:32.
Semaphorin uses mineek/seprmvr64 (github.com) to tether downgrade your device without blobs by patching out sep
Official repo:
I should first start off by saying, that this release is NOT just for for a7 devices by any means. We already have preliminary support in place for iphone 6/6+, 6s/6s+, and 7/7+ as well as quite a vast array of ipads. The thing is, we had a release date in mind, and that is today. Fri, Mar 29 2024 is a big day for all of us. It means a fully functional gui program to tether downgrade a7 devices to iOS 7 with full jailbreak, sideloading, itunes& app store support. The program, at the time of release, also supports iOS 8 beta 4 on a7 devices. This is huge news for the jailbreaking community, because it means not only is jailbreak possible with sepless downgrade, but it also means sideloading is too!
Downgrade, jailbreak& tweaks working on iPhone 5s
To launch Cydia on iPads, open Safari and type cydia:// into address bar
The only thing holding us back from iOS 10.3+ support at the moment is the entire script is written with HFS+ in mind, however iOS 10.3+ support is by no means out of the question. In fact it is one of our main goals for the project! The more attention this project gets the more likely this script will end up supporting more iOS versions sooner then later.
The script can already, technically, boot iOS 9.0 - 9.2.1 on a7, a8, and a8x devices. The problem is, all containerized apps are missing from the home screen and do not function because keybags do not unlock on those versions when sep is patched out. Keybags are required for containerized apps to work. This includes the vast majority of system apps on iOS 9 as well as user apps. There is hope howerver! iOS 9.3+ the keybags do unlock, which means if we can get iOS 9.3-10.2 to boot properly, it would mean all containerized system apps and user apps work as intended. This would mean full a8 and a8x support with the script. The issue with iOS 9.3-10.2 right now is that there are hundreds of sandbox errors when downgraded to those versions. This is a side effect of seprmvr64 and is by no fault of the script itself. If we can statically patch out the sandbox on iOS 9.3-10.2 without the use of sbops, it would allow us to boot those versions just fine. The sandbox patch we are using right now is the taig sandbox patch, which does not do anything on iOS 9.3-10.2 sadly. If anyone can develop a sandbox patch for these versions, it would be greatly appreciated.
That said, iOS 10.3+ downgrade support is very promising, since it is already documented to be fully working with seprmvr64. That means blobless downgrades to iOS 10.3+ is fully possible, it is just a matter of updating the script with support for those versions in mind. So do not lose hope! This is a big project that means a lot to the jailbreaking community.
Supported devices at time of release
iPhone 5s, ios 7.0.1-8.0 beta 4iPad mini 2, ios 7.0.3-8.0 beta 4iPad air 1, ios 7.0.3-8.0 beta 4iPad mini 2 (china), ios 7.1-8.0 beta 4iPad air 1 (china), ios 7.1-8.0 beta 4
The script is designed for mac os high sierra, mojave, and catalina. It may support newer versions but those versions are untested.
You can download the gui version of our app at Release 1.0 beta 1 · y08wilm/Semaphorin (github.com)
Or if you insist on using the command line version
Connect your iPhone or iPad in dfu mode and then type these commands in terminal
git clone --recursive https://github.com/y08wilm/Semaphorin && cd Semaphorin sudo ./semaphorin.sh --restore
Thank you for your interest in the project! This project means a lot to us, and I hope it works well for you and we see big updates in the near future.