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Original poster
Apr 12, 2001
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Alongside providing the first release candidate version of iOS 16 to developers, Apple today has also seeded new beta versions of iOS 15.7 for the iOS 15 operating system and macOS Monterey 12.6 for the Monterey operating system.

macOS-Monterey-2.jpg

Both updates are release candidate versions, which means they could see a launch in the near future. The iOS 15.7 update has a version number of 19H12, while macOS Monterey 12.6 has a version number of 21G115.

Registered developers can download necessary profiles to install the updates from the Apple Developer Center, and can download the updates from there.

According to the iOS 15.7 release notes, the update provides security updates rather than new features.


Article Link: Apple Provides iOS 15.7 and macOS Monterey 12.6 Release Candidates to Developers
 

nicolas17

macrumors member
Apr 23, 2020
86
115
Is this for all iOS 15 devices or just the ones not getting iOS 16?
All.

I suspect this will be like iOS 14.8, and you'll be able to choose if you want to install 16.0 or 15.7.

The firmware codenames or "build trains" are:
...
14.5: AzulE
14.6: AzulF
14.7: AzulG
14.8: AzulSecuritySky
...
15.5: SkyF
15.6: SkyG
15.7: SkySecuritySydney
16.0: Sydney

So it seems like a similar pattern, 14.8 was "iOS 14 with security updates backported from iOS 15", and 15.7 is "iOS 15 with security updates backported from iOS 16".
 
Last edited:

commander.data

macrumors 65816
Nov 10, 2006
1,044
142
All.

I suspect this will be like iOS 14.8, and you'll be able to choose if you want to install 16.0 or 15.7.

The firmware codenames or "build trains" are:
...
14.5: AzulE
14.6: AzulF
14.7: AzulG
14.8: AzulSecuritySky
...
15.5: SkyF
15.6: SkyG
15.7: SkySecuritySydney
16.0: Sydney

So it seems like a similar pattern, 14.8 was "iOS 14 with security updates backported from iOS 15", and 15.7 is "iOS 15 with security updates backported from iOS 16".
It'll be interesting to see if iOS 15.7 will be available in .ipsw form to allow downgrading from iOS 16 or if it'll only be available as an on-device alternate software update.
 

nicolas17

macrumors member
Apr 23, 2020
86
115
It'll be interesting to see if iOS 15.7 will be available in .ipsw form to allow downgrading from iOS 16 or if it'll only be available as an on-device alternate software update.

15.7 release candidate is already available in ipsw form.

It remains to be seen if the final build will be the same, if there will be an ipsw of the final build if it's not the same as the RC, and if there will be an ipsw for 15.7.1 and later ones...
 
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anshuvorty

macrumors 68030
Sep 1, 2010
2,819
3,674
California, USA
Were there any beta versions of this version of iOS 15? They just jumped straight to an RC version without releasing any betas.

Can you clarify my confusion? Thanks!
 

PaulKemp

macrumors 6502a
Jun 2, 2009
563
124
Norway
updating to ios 16 now and watch os as well.

Any issues with ios 16 and 12.5.1 (21G83)? Seems like I better wait a bit with the Macs OS.
 

gank41

macrumors 68030
Mar 25, 2008
2,775
2,745
If anyone's wondering how to see the macOS 12.6 RC, install the Profile for Ventura, but then select Other Updates and it'll come up there. I was also offered a new Safari Seed, not the Tech Preview.

Once completed, remove the profile by reverting back to Default settings under Software updates. If there's a new build when it's officially released, you'd still get that, otherwise you'd be on it anyway...
 

Mr Todhunter

macrumors 6502
Apr 4, 2010
426
298
Third planet from the Sun
If anyone's wondering how to see the macOS 12.6 RC, install the Profile for Ventura, but then select Other Updates and it'll come up there. I was also offered a new Safari Seed, not the Tech Preview.

Once completed, remove the profile by reverting back to Default settings under Software updates. If there's a new build when it's officially released, you'd still get that, otherwise you'd be on it anyway...
Thank you. I’m installing it right now
 
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gank41

macrumors 68030
Mar 25, 2008
2,775
2,745
Thank you. I’m installing it right now
FWIW, I wish I would have not updated. Seems that some of Ventura’s recent beta issues have bleed over to Monterey. Not the same issues, per se’, just the lack of QA testing it seems.
 
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