axi0mX auf Twitter: "EPIC JAILBREAK: Introducing checkm8 (read "checkmate"), a permanent unpatchable bootrom exploit for hundreds of millions of iOS devices. Most generations of iPhones and iPads are

Authored by and submitted by Bspeedy

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HarmonicEagle on September 27th, 2019 at 11:57 UTC »

So for anyone who doesn’t understand what this means; bootROM (ROM = Read-Only Memory) is apparently the first code executed upon booting your iDevice. Since it’s read-only, Apple cannot patch the bootROM since it can’t be written to. They’d have to get a hold of your device in order to patch this; a pointless exercise, since it is an exploit apparently present in hundreds of millions of devices. A jailbreak built from this exploit would support any A5-chip device, which for iPhone would be any iPhone from 4S all the way through to the iPhone X and there’s absolutely nothing Apple can do about it, no matter how many updates they release. Have fun guys :)

uglykido on September 27th, 2019 at 11:46 UTC »

Omfg this means dual booting iOS right???

Samtulp6 on September 27th, 2019 at 11:36 UTC »

This is literally the biggest thing to ever happen in Jailbreaking. There were bootrom exploits in the past, (24kpwn, SHAtter, Limera1n, but none covered so many device versions)

This importance & power a bootrom exploit cannot be underestimated.

Jailbreaking is about to experience a second golden age.

-Permanent jailbreakable devices


-Dual booting

-Custom firmwares

-Much; MUCH more.

IMPORTANT EDIT: the exploit is tethered, if you did any of the above mentioned actions it will require either a computer to boot, or (if someone manages to do the same as in 2011), it will boot fine into unjailbroken mode and require a computer (and a reboot) to jailbreak. The latter scenario requires a lot of work and will take a while if it’s ever released.