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[GUIDE] How to update to iOS 15.7.2 for iPhone 8/X/XR/XS/11/SE2/12/13/SE3
- Thread starter DuckMe
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Thanks DuckMe and other contributors to this guide!
Apple sent me a replacement iPhone after a failed repair. It had iOS 16 on it so I had to restore to iOS 15.6 RC1 (19G69) which still was signed today, January 20, 2023.
I then used Apple Configurator 2 with the two profiles. Calculating the days between two dates on different years is impossible for a human so I used https://www.timeanddate.com/date/duration.html which gave me
Again, thank you for writing this guide. For others still thinking about doing this, yes, 15.6 RC1 is still signed but as mentioned, that can change any day. 16.3 and 15.7.3 are slated for release next week, maybe then Apple will finally remember they left an old version signed. So hurry up if you’re thinking of doing this!
Apple sent me a replacement iPhone after a failed repair. It had iOS 16 on it so I had to restore to iOS 15.6 RC1 (19G69) which still was signed today, January 20, 2023.
I then used Apple Configurator 2 with the two profiles. Calculating the days between two dates on different years is impossible for a human so I used https://www.timeanddate.com/date/duration.html which gave me
43 days to put in the delay thing file. iOS 15.7.2 installed correctly, no being stuck on “Verifying”!Again, thank you for writing this guide. For others still thinking about doing this, yes, 15.6 RC1 is still signed but as mentioned, that can change any day. 16.3 and 15.7.3 are slated for release next week, maybe then Apple will finally remember they left an old version signed. So hurry up if you’re thinking of doing this!
Hi @DuckMe
I downgrade from 16.2 to 15.6RC on my Iphone 12 pro.
- After that, change phone to Supervise mode by ibackupbot
- install first: ios 15.7.2 profile (from your attachment with changed date to 43 for today: 21 Jan 2023)
- install second: ios 15.6 beta (i cannot find out ios 15 beta profile).
But in Setting/ profile 15.7.2, not yet verified and delay 43 days.
I can not cont...,
May be I was wrong somewhere? please advise
Thank you.
I downgrade from 16.2 to 15.6RC on my Iphone 12 pro.
- After that, change phone to Supervise mode by ibackupbot
- install first: ios 15.7.2 profile (from your attachment with changed date to 43 for today: 21 Jan 2023)
- install second: ios 15.6 beta (i cannot find out ios 15 beta profile).
But in Setting/ profile 15.7.2, not yet verified and delay 43 days.
I can not cont...,
May be I was wrong somewhere? please advise
Thank you.
I used a delay of 43 days yesterday, January 20 and it was a success. On the site https://www.timeanddate.com/date/duration.html I did NOT include the end date in the calculation. The start date is December 8.
Try a delay of 44 days and see what happens!
i agree with that lol 😂
Thanks for letting us know about this
Still don't know for what reason they are still signing 15.6 RC1 🤷♂️
You're welcome, and thanks for these replies, I'm sure your replies will help anyone reading this guide.
There is no 15.6 beta profile out there, only the iOS 15 beta profile, but every time a new version is released, those websites that distribute the beta profiles will say that the profile can be upgraded to 15.X, so call them 15.X beta profiles.
It doesn't actually have to be particularly exact to go into December 8th, as far as I know iOS 15.7.2 RC is in signing status from the afternoon of December 7th to the morning of December 12th, so just enter that date range.
But December 7th and December 12th I would avoid because that date is not full day.
And there will be zero problems on December 8th (no matter what time zone you are in), which is why I chose it.
Glad you got 15.7.2.
Guys, you can test it and install the iOS 15 beta profile again to see if you can get iOS 15.7.3.
You don't need to go into supervised mode, and you don't need a delayed OTA, that's because 15.7.3 RC is being signed now until next Monday morning (January 23, 2023).
@gsmman @maryland @yahsavior
You don't need to go into supervised mode, and you don't need a delayed OTA, that's because 15.7.3 RC is being signed now until next Monday morning (January 23, 2023).
@gsmman @maryland @yahsavior
I tested by installing the iOS 15 beta profile, but there is no 15.7.3 update. It says 15.7.2 is up-to-date. I tried so many times.
I have had the beta profile installed since going to 15.7.2 on my iPhone 13 Pro and don't see 15.7.3 either
Hey guys, thanks for that testing.
It appears that Apple did not compile iOS 15.7.3 firmware for iPhone 8 and later models, so 15.7.2 is the last iOS 15 firmware for these models.
There is an exception for the iPhone 8 and 8+ as it shares the same firmware as the iPhone 7, but I guess there is no signature there.
Thnaks again.
Hello, I’m on iPhone SE 2020. I already on supervised mode. But I’m confused how to add your Attachment OTA Profiles to phone?
The guide provides 3 ways to import profiles to iPhone, which one are you trying? and confused about which step?
Please read the "Import and install configuration profiles" paragraph of the guide.
And...
don't forget two things before importing:
1) Modify the attachment to replace 7 days in the file with the correct date you calculated.
2) Remove the
.txt in the filename.
I need to clarify that for the iPhone 8 and iPhone 8 Plus that can be jailbroken through the "checkm8" exploit, they can theoretically install iOS 15.7.3 and later iOS 15.
After jailbreak, you can use the firmware of the iPhone 7 series to flash in, because you have already jailbroken, you can ignore Apple's signature to force flash in the firmware.
This is only theoretically possible as I don't have an iPhone 8 so I can't provide detailed steps.
It is worth noting that if Apple compiled the iPhone 7 firmware to reduce the firmware size and removed the part about the iPhone 8, then flashing the firmware will undoubtedly cause a brick (there must be a warrior to take the risk to verify this before anyone else tries). Also the iPhone X, which can use the same exploit, cannot install 15.7.3 because Apple has not compiled a 15.7.3 version for that model.
EDIT:
For those who use iPhone 8 series, you can refer to the related guide of "using checkm8 to downgrade iPhone 8 without blobs".
For example this one: github[dot]com/mineek/iostethereddowngrade
Also, if you're going through this upgrade that could BRICK your phone (become a warrior who verifies the theory), I'd be happy to share my experience (i know jailbreak well), just reply to this thread to keep in touch with me.
EDIT2:
Judging by the iPhone 7 Plus's firmware file size, they may have removed the iPhone 8 compatible part from this firmware.
Someone needs to risk possibly bricking the phone to test it.
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Attachments
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I'm currently unable to confirm if the beta profile for iOS 15 will expire in February, or if it will still be available for updates even after it expires.
I'll update this guide after I verify it in February, but right now everything is based on assumptions.
EDIT:
Ok, I misunderstood your question.
First of all, the guide only hints that the beta profile may expire at the end of January, while the delayed OTA expires in March.
But your problem is 15.7.1, which can be updated without beta profile, because it is a public version, but its delay will expire on March 12, 2023, which is consistent with 15.7.2 RC.
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Added a new FAQ:
For more information about CVE-2023-23504, please refer to the details of the vulnerability disclosure:
adamdoupe[dot]com/blog/2023/01/23/cve-2023-23504-xnu-heap-underwrite-in-dlil-dot-c/
It's worth pointing out that the person who reported the bug was using macOS to reproduce the bug, although the bug exists on the iPhone as well, but there are some differences there, apps can create and destroy ports on iPhone without root privileges, the vulnerability requires the application to create more than 65535 ports, which normal applications can do.
Therefore, this vulnerability is easier to exploit on iPhone than on macOS.
For more information about CVE-2023-23504, please refer to the details of the vulnerability disclosure:
adamdoupe[dot]com/blog/2023/01/23/cve-2023-23504-xnu-heap-underwrite-in-dlil-dot-c/
It's worth pointing out that the person who reported the bug was using macOS to reproduce the bug, although the bug exists on the iPhone as well, but there are some differences there, apps can create and destroy ports on iPhone without root privileges, the vulnerability requires the application to create more than 65535 ports, which normal applications can do.
Therefore, this vulnerability is easier to exploit on iPhone than on macOS.
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Hi @DuckMe, made an account to thank you for your work + everyone that helped 🙏🏼
Device and OS: iPhone 13 mini, iOS 16.2.
Before doing anything, I created a local backup of my phone. I found firmware 19G69 and restored it via iTunes(MS W10) (I originally forgot you have to hold "Shift" before clicking restore iPhone). That worked out well, but I could not get supervision on my iPhone to work using iBackupBot. I tried removing my passcode, adding a passcode, making sure I had "Find my iPhone" turned off, etc. but had no luck. The issue was that every time I tried to restore the "supervise" config data (with and without the "1111" password), I always got "Restore Error" on the program. After a few hours I caved in 😅 Bought a license of iMazing (£30) and entered supervised mode (extremely straightforward). I then emailed myself and opened/installed the delayed OTA profile and definitely my own copy of an iOS15 Beta profile. I proceeded to Settings and updated to 15.7.2, finally restoring the phone once more to remove supervision. Lastly, I found my earlier backup, edited the "Info.plist" file and overwrote my "Product Version" from 16.2 to 15.7, and restored using iMazing (I did however noticed the backup was visible using iBackupBot, so other than the supervision issue, that might be a good option for others).
Thanks once again for your work, much appreciated 🙏🏼
Device and OS: iPhone 13 mini, iOS 16.2.
Before doing anything, I created a local backup of my phone. I found firmware 19G69 and restored it via iTunes(MS W10) (I originally forgot you have to hold "Shift" before clicking restore iPhone). That worked out well, but I could not get supervision on my iPhone to work using iBackupBot. I tried removing my passcode, adding a passcode, making sure I had "Find my iPhone" turned off, etc. but had no luck. The issue was that every time I tried to restore the "supervise" config data (with and without the "1111" password), I always got "Restore Error" on the program. After a few hours I caved in 😅 Bought a license of iMazing (£30) and entered supervised mode (extremely straightforward). I then emailed myself and opened/installed the delayed OTA profile and definitely my own copy of an iOS15 Beta profile. I proceeded to Settings and updated to 15.7.2, finally restoring the phone once more to remove supervision. Lastly, I found my earlier backup, edited the "Info.plist" file and overwrote my "Product Version" from 16.2 to 15.7, and restored using iMazing (I did however noticed the backup was visible using iBackupBot, so other than the supervision issue, that might be a good option for others).
Thanks once again for your work, much appreciated 🙏🏼
This is the second time I've heard that iBackupBot doesn't work, which is weird because for some it works and for some it doesn't. I don't know what went wrong.
Anyway, I'm glad it did help you.
Also, you're probably the only one who read the guide carefully, because you replied with the model and pre-upgrade version correctly formatted as suggested in the guide, which is useful because when a lot of people have the same problem, I can quickly determine if the problem might be from a particular version or model.
Thanks for reading and replying.
Can iOS 15.7.2 delayed ota profile public release available on several sites be used to update iPhone 8 and iPhone higher?
I woke up to my phone mysteriously turned off with more than 50% battery and the beta profile missing. I'm guessing it expired.
No, you can't, because that's the public version of the delayed OTA profile, not the RC version, the public version released after the RC version ends, and the public version does not work with iPhone 8 and later models.
In short, the public version delay OTA for 15.7.2 has the wrong date.
I didn't expect it to be automatically deleted.
Yes, the beta profile for iOS 15 expired on January 31, as expected.
Currently there is no way to upgrade to 15.7.2 for iPhone 8 and later models.
But iOS 15.7.1 is still available, can upgrade to 15.7.1 by following this guide, but without importing the beta profile.
Since Apple is still releasing iOS 15 for older devices, it is also possible that in the future they will re-release a new iOS 15 beta profile, but until that happens, there is no chance to update to iOS 15.7.2.
To those who have successfully upgraded to iOS 15.7.2, congratulations.
I will not be editing this guide again until Apple releases a new beta profile.
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