Undecimus: Jailbreak on iOS 12.2 (iPhone 6,2) fails. Unable to exploit kernel.

Created on 11 Jul 2019  ·  93Comments  ·  Source: pwn20wndstuff/Undecimus

Describe the bug
After clicking "jailbreak" it says:

Notice
Unable to exploit kernel. This is not an error. Reboot and try again.

To Reproduce
Steps to reproduce the behavior:

  1. Click Jailbreak

Screenshots
IMG_C09F5ACA803E-1 2

Device (please complete the following information):

  • iOS Version: 12.2
  • iOS Device: iPhone 5S (Global)
  • unc0ver Version: 3.3.0~b1

Place an "x" between the brackets if true:

  • [ I'm not sure ] this is a bug others will be able to reproduce
  • [ x ] this issue is present with all tweaks uninstalled(except for default packages) or disabled
  • [ x ] this issue is present after a rootfs restore
  • [ x ] this issue is present on the latest version of unc0ver

Logs
If applicable, add logs or error messages here.
https://pastebin.com/S2SDKLra

Bug

Most helpful comment

A7 A8 A12 unsupported

All 93 comments

I too got this error 'once'
Most of the time when I click jailbreak, my device (iPhone 7 - iOS 12.2) will reboot itself, gets very warm - battery indicator reads 50%, but it turned off and displayed a warning about battery level.

On startup - no cydia, and the jailbreak app is still saying ready for jailbreak.

Same

On Thu, Jul 11, 2019 at 12:15 PM Jonny Rolleston notifications@github.com
wrote:

I too got this error 'once'
Most of the time when I click reboot, my device (iPhone 7 - iOS 12.2) will
reboot itself, gets very warm - battery indicator reads 50%, but it turned
off and displayed a warning about battery level.

On startup - no cydia, and the jailbreak app is still saying ready for
jailbreak.


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I mean its the first build, no surprise that it doesnt work

Exploit isn't very reliable, try again. It's still too early to say if the exploit is unsupported on some devices or not(5s is 4k, might be related, didn't look at exploit yet)

same error on ipad mini 2, no luck with rebooting it

Same error on 6s 12.2; keeping app open for a few seconds before jailbreaking appears to prevent reboot but exploit still fails. (Tested also with build2)

Same problem for me on iPhoneX, ios 12.2. This device have never been jailbroken before.

lol even with build 2

Just curious - it might be useful if someone could post if they have had a successful jailbreak?
At the moment it feels like no one on 12.2 has got a jailbreak going - but that's probably just cause the only people posting are the ones who haven't.

I get the same message on iPad Air and iphone6 both on iOS 12.1.3 no device reboot. Still happens after manual reboot. Clicking on ok or view log crashes the app back to homescreen for both devices

same. I hope that these reboots will not kill my battery lol

well if its released, it gotta work in some way
also someone replied to pwn20wnd saying that it works

I too got this error 'once'
Most of the time when I click jailbreak, my device (iPhone 7 - iOS 12.2) will reboot itself, gets very warm - battery indicator reads 50%, but it turned off and displayed a warning about battery level.

On startup - no cydia, and the jailbreak app is still saying ready for jailbreak.

same here

ios 12.2 - iphone se

I'm getting it too, i keep rebooting my phone and re-running it but nothing happens

mine didn't reboot but it just can't exploit kernel

so apparently it doest work with 4k devices (a7 and a8)
but I think he's gonna fix it soon

it also does not work on my 6s, which is not a 4k device

well thats what pwn20wnd said
i have no idea

same error on my iphone 8 as well

Same issue on iPhone X

Yup iPhone X 12.2 (never been jailbroken before) has the same issue for me.

Edit: I tried b2 as well with the same result

My issue is close to this one but I don’t get this pop up. When I hit jailbreak I only get 1/31 of the way and it reboots. I have an iPhone 7 on iOS 12.2

I jailbreaked successfully using the Sock Puppet exploit on an iPhone 6s Plus.(N66AP,iOS 12.1.1)

yea but this happens on ios 12.2 no 12.1.1

yeah I know. I mean that this exploit does work in some way.

I am doing on iPhone X global 12.2 I got same thing restart phone after press jailbreak

Anyone got the solution for this

Same message on iPhone 8 12.2 with Unc0ver 3.3.0~b2

Same . my device (iPhone 7 12.2) will reboot after press jailbreak button

same error on 7P 12.2

Same error on my iPhone se

why this is not been fixed , i have waited too long.

It is because you are impatient.
The jailbreak is released <1 hour after the exploit is released.

My iPhone X 12.2 instantly restarted when I clicked Jailbreak option :( and sometimes it apppears kernel error

On the iphone 8 p is the same result cannot be successful 12.2

I am able to consistently reproduce this if I try all the common methods for increasing the chance for a successful jailbreak. Otherwise, if I attempt a jailbreak straight after a reboot it just reboots again.

same...

same problem 12.2 iphone 8 plus

same my iphone xX 12.2 keep on restarting

I have been getting same error then after numerous restarts and kernel errors it goes through to I think step 10 and gives error about the snapshot

iPhone SE 12.2
Two result randomly after tap Jailbreak button.

  1. Popup below then crash.
    Notice:
    Unable to exploit kernel. This is not an error. Reboot and try again.
  2. Reboot.

iPhone 8+ 12.2
After pressing Jailbreak:

  1. “Unable to exploit kernel...”, —> Respring
    or
  2. Crash —> Reboot

Can anyone with the vnode error help me test a build NOW?

@pwn20wndstuff how?

iPhone 8+ 12.2
After pressing Jailbreak:

  1. “Unable to exploit kernel...”, —> Respring
    or
  2. Crash —> Reboot

the same, but on iPhone 6s 12.2 ;D

iPhone 6
iOS 12.2

After clicking "jailbreak" it says:
Notice
Unable to exploit kernel. This is not an error. Reboot and try again.
When you push OK it crashes

Same issue on iPhone 7 (global) on 12.2, seems to be a 50/50 chance of getting the exploit failed popup and crash, or a crash and reboot. Cant press view log either, app crashes.

ok on b3 4k devices are just unsupported

Unable to exploit kernel. This is not an error. Reboot and try again.
When you push OK it crashes

Iphone 6 IOS 12.2

I have the same problem on an iOS 12.2 iPhone SE, never jailbroken before. I'm using Build 2 of the beta. I got the Unable to exploit kernel message once, but now I don't have it at all, it just crashes. Also, what battery percent are you all on? It might be that. Because when you update iOS, you need it to be 50% or over.

Same issue on b3, crash and reboot, with the occasional error

Iphone x, b3, 12.2 reboots right after clicking jailbreak or on step 1

When, after install B3 i'm " Unsupported " Unc0ver, iOS 12.1.4 on iPhone 5S.

iPhone SE 12.2, unc0ver b3
Crash & reboot immediately after taping Jailbreak.

Uncover b3 said unsupported iphone6 ios12.2

Even with the new b3 release I still get 1/31 of the way and it reboots.

I am still getting the exact same behavior on b3

Same here. IOS 12.2 / Iphone X. Respring after hitting the JB button. Rev. b3

still no go on iphone X (10,6) ios 12.2 with b4. No resprings now, but "Unable to exploit kernel" message...
here is the log

2019-07-12 19:55:26.028 Undecimus[274:11798] [*] unc0ver Version: 3.3.0~b4
2019-07-12 19:55:26.028 Undecimus[274:11798] [*] Machine Name: iPhone10,6
2019-07-12 19:55:26.028 Undecimus[274:11798] [*] Model Name: D221AP
2019-07-12 19:55:26.028 Undecimus[274:11798] [*] Kernel Version: Darwin Kernel Version 18.5.0: Tue Mar  5 19:52:18 PST 2019; root:xnu-4903.252.2~1/RELEASE_ARM64_T8015
2019-07-12 19:55:26.028 Undecimus[274:11798] [*] Kernel Page Size: 0x4000
2019-07-12 19:55:26.028 Undecimus[274:11798] [*] System Version: iOS 12.2 (Stable) (Build: 16E227)
2019-07-12 19:55:26.028 Undecimus[274:11798] [*] Bundled Resources Version: 1.0~b23
2019-07-12 19:55:26.139 Undecimus[274:11798] [*] Status: Jailbreak
2019-07-12 19:55:26.140 Undecimus[274:11798] [*] Progress: Ready to jailbreak
2019-07-12 19:55:27.951 Undecimus[274:11798] [*] Status: Jailbreaking
2019-07-12 19:55:27.953 Undecimus[274:11802] [*] KernelUtilities.c(1377): restore_kernel_task_port
2019-07-12 19:55:27.954 Undecimus[274:11802] [+] memory_size: 2960130048
2019-07-12 19:55:27.954 Undecimus[274:11802] [D] platform: iPhone10,6 16E227
2019-07-12 19:55:27.961 Undecimus[274:11798] [*] Progress: Exploiting kernel...
2019-07-12 19:55:30.287 Undecimus[274:11802] [*] Failed to fetch task_port kaddr
2019-07-12 19:55:30.333 Undecimus[274:11802] [*] Failed to fetch fd_ofiles
2019-07-12 19:55:30.333 Undecimus[274:11802] [*] tfp0: 0x0
2019-07-12 19:55:30.333 Undecimus[274:11802] [*] kernel_base: 0x0000000000000000
2019-07-12 19:55:30.333 Undecimus[274:11802] [*] kernel_slide: 0x0000000ff8ffc000

B5 works fine for me, i think this issue is solved.

Same, b5 worked for me on iPhone 7 12.2

b5 working on iphone x (10,6) ios 12.2 Thank You.) Good work.)

Yes, all hail pwn20wnd!

Upgraded from 12.1.2 to 12.2 by futurerestore with 12.3.1 SEP.
log:

[*] snapshot VersionPlist: {
    BuildID = "5A35BFCA-46D7-11E9-A4B6-B43BF1FFAC3C";
    ProductBuildVersion = 16E227;
    ProductCopyright = "1983-2019 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "12.2";
    SystemImageID = "B79ADF69-E7F3-4BDC-BD0F-43503B2FC9F1";
}
[*] rootfs VersionPlist: {
    BuildID = "11AF4694-7C34-11E9-884F-3DC456383FF5";
    ProductBuildVersion = 16F203;
    ProductCopyright = "1983-2019 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "12.3.1";
    SystemImageID = "A48EEEDF-FF6D-4963-98C8-FA5D2F08D487";
}
[*] RootFS already mounted, delete OTA file from Settings - Storage if present and reboot.

Popup told me to "delete OTA file from Settings", but it does not exist.

done, iPhone X iOS 12.2 via b5 update of unc0ver

Upgraded from 12.1.2 to 12.2 by futurerestore with 12.3.1 SEP.
log:

[*] snapshot VersionPlist: {
    BuildID = "5A35BFCA-46D7-11E9-A4B6-B43BF1FFAC3C";
    ProductBuildVersion = 16E227;
    ProductCopyright = "1983-2019 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "12.2";
    SystemImageID = "B79ADF69-E7F3-4BDC-BD0F-43503B2FC9F1";
}
[*] rootfs VersionPlist: {
    BuildID = "11AF4694-7C34-11E9-884F-3DC456383FF5";
    ProductBuildVersion = 16F203;
    ProductCopyright = "1983-2019 Apple Inc.";
    ProductName = "iPhone OS";
    ProductVersion = "12.3.1";
    SystemImageID = "A48EEEDF-FF6D-4963-98C8-FA5D2F08D487";
}
[*] RootFS already mounted, delete OTA file from Settings - Storage if present and reboot.

Popup told me to "delete OTA file from Settings", but it does not exist.

iPhone SE.
Upgraded from 12.1.2 to 12.2 by futurerestore with 12.3.1 SEP.
Rebooted and tried many times with b5 build.

  1. STEP 1/31 "Unable to exploit kernel. This is not an error..."
    or
  2. STEP 10/31 "RootFS already mounted, delete OTA file from..."

b5 appears to be working

How did you get b5 guys ?? Mine says up to date with b3...

OK got it. Just uninstalled and installed again from tweakbox.

Same as 70599 : "Popup told me to "delete OTA file from Settings", but it does not exist." I checked storage of course.

I believe the “OTA file” is a different issue to the 12.2 reboot issue. I would open a separate bug if retrying the jailbreak several times does not work.

I got the same message on my iPhone 7 but after the 3rd time it worked.
I also got this message on my iPad but retrying did not work for this device

yea 4k devices are unsupported
i believe its gonna be supported soon
the ota file just prevents you from updates
and btw b5 is out now

I’m getting the same thing here on my 6(12.2.1). Even v3.2.2 gives me problems as to jailbreak doesn’t even last an hour before my phone restarts on its own.

I just change my ios version (using Filza)to iOS 12.3 to unlock my Network-Lock.But After I reboot my iPhone 7,open unc0ver and press the jailbreak button,it goes wrong.(Failed to exploit the kernel)

Listen closely , mine worked first delete the uncover app n redownload it again after put ur fone on airplane mode . Then open up the app it will bring the same error at fst (May go off) just keep pressing the jail break button the third time it will eventually extract all the files (MUST BE IN AIRPLANE MODE)

iPhone 6 (A7,2)
iOS 12.2
Unc0ver b5

UNSUPPORTED ??????????

No comments!

YES

A7 A8 A12 unsupported

I have iPhone X uncover b-5 worked just follow the procedure in the thread it should work

Unc0ver 3.3.0~b5 iPhone 6s iOS 12.2
Successfully jailbreaked by first time

Unc0ver 3.3.0~b5 ipad mini 2 unsupported

Ok I found a way that works every time. Take your simcard out and turn WiFi off then jailbreak. That’s it!

Oh and turn reload daemons off. If not I notice the phone gets stuck in a loop.

iphone 5s no suported 12.2.!

Another message on my iPhone 8 (iOS 12.2) after testing with Unc0ver 3.3.0 b6. Here the error message "Unable to find kernel offsets". I've even tried to reboot three times.

All should be supported read threads carefully I’m on b5 iOS 12.2 iPhone 7. It works perfect for me

There a tutorial on why the riot says u need to delete it when it has been there’s a way to fix it just look it up

No moooor send

Sultan almuteiri ‬

‫في 13‏/07‏/2019 الساعة 11:07 م، كتب/كتبت ‏Robiocop ‏<[email protected]notifications@github.com>:‬

Another message on my iPhone 8 (iOS 12.2) after testing with Unc0ver 3.3.0 b6. Here the error message "Unable to find kernel offsets". I've even tried to reboot three times.


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I have iPad Pro 9.7 on iOS 11.3.1.

I've tried 3.3.0 and 3.3.0.b7 and I get the same message.

I had to comeback to 3.2.1 :-(

Jailbreak successfully worked for me! tried many combinations and after many fail attempts finally found jailbreak on iPhone 6s.

Device Details: 6s iOS 12.2
Unc0ver Update : Undecimus-v3.3.0.ipa
Note: Turn off find my iPhone and put the device on airplane mode. Also, make sure you do restore RootFS before hitting jailbreak

Cheers! Good Luck

Try on uncover 3.3.0, beta, until 3.3.5
Stay on unsupported...
Iphone 6
Ios 12.2

Try on uncover 3.3.0, beta, until 3.3.5
Stay on unsupported...
ipad mini 2
Ios 12.2

Sorry, forgot to close this issue.

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