Today's video focuses on #iOS #Downgrades to unsigned iOS versions using saved SHSH2 blobs. Just a few days ago, Pwn20wnd, a former Electra Team member announced on Twitter that he successfully downgraded to iOS 11.3.1 using iOS 11.4.1 SEP on his iPad Air 2. This means that the SEP and the baseband of iOS 11.4.1 are compatible with iOS 11.3.1 and therefore anyone who has iOS 11.3.1 SHSH2 blobs saved and runs iOS 11.3 or lower Jailbroken can set the nonce in the memory and perform an upgrade/downgrade to iOS 11.3.1 which is currently no longer signed by Apple.
Downgrades from iOS 11.4.1/11.4 are currently not possible because to downgrade, you need to set the nonce in the memory and that requires special privileges your app would simply not have without a kernel exploit which we currently don't have.
In this video I am going to also explain all you need to know about SEP (Secure Enclave Processor), Downgrades, Baseband, compatibility and why sometimes you cannot downgrade to an older version even if you're jailbroken and you have the SHSH2 blobs saved, which is the case of iOS 10.x and even iOS 11.2 and older.
▽ Resources ▽
▶ Downgrade Toolkit
▶ Demystifying SEP Presentation
▶ iOS 11.4 (FINAL) JAILBREAK GREAT NEWS! NEW Sandbox/Root Vulnerability | Osiris Jailbreak
▶ Cydia Fix/Update Video
▶ iOS 11.4.x/11.3.x SILEO AND CYDIA IMPORTANT NEWS / UPDATES | COMPATIBLE TWEAKS LIST
▶ 15 ESSENTIAL CYDIA TWEAKS You Must Have on iOS 11.3.1/11.2.x Jailbreak