tutorial-alternate.md

tutorial-alternate.md

Note: This writeup is for advanced users and developers. For a guide that will actually walk you through this, ios.cfw.guide is updated. guides.stkc.win should be soon™️.

13.x appears to have issues. 13.5 is confirmed to fail to check updates once you change the audience. If any other versions do this, please let me know.

So, I got bored and decided to do more research into alternates. Turns out you can still abuse it to update to 14.8 on iOS versions that don't support alternates. You're welcome.

This requires a jailbreak. Of course, you can do the backup editing stuff if you're not JBed but:

a. It's a wack method imo

b. I didn't try it so I'm not gonna explain it

Also, don't do this if you're already on 14.5-14.7.1, there's no point. Just get the alternate profile directly and follow the normal steps.

Steps:

0. Go through the guide steps until you get up to the "installing the profile" steps (get supervised, etc).
1. Install an iOS beta profile. It doesn't matter which, as long as it installs.
2. Get the 14.8 profile marked "Alternate" from my site
3. • Option A: I know how to terminal
     1. install plutil (default repo)
     2. plutil -key MobileAssetAssetAudience -string c724cb61-e974-42d3-a911-ffd4dce11eda "/Library/Managed Preferences/mobile/com.apple.MobileAsset.plist"
   • Option B: I don't know how to terminal
     1. Get Filza
     2. Open /Library/Managed Preferences/mobile/com.apple.MobileAsset.plist in Filza
     3. Set MobileAssetAssetAudience to c724cb61-e974-42d3-a911-ffd4dce11eda
4. Reboot or launchctl reboot userspace
5. Continue with normal delay OTA procedure (restore rootFS, install update)
6. Remove the beta profile to remove the channel override.

This expires whenever the alternate expires.

Why this works:

Audience = channel. Channel = iOS release, iOS 15 dev beta, iOS 14 dev beta, iOS 14 public beta, iOS 14 security updates, etc.

The way alternate works is that your device checks the release channel, sees that there's an iOS 15 update, but also sees that the server said there's an alternate update and checks the alternate channel that the server replied with.

Now, if you're on <14.5, the code to check the alternate channel isn't there. However, you can abuse the fact that beta profiles set the channel by editing the plist where the channel is stored to change the channel to the iOS 14 security updates one. From your device's perspective, all it knows about is the alternate channel.

@iQasim90 Follow this https://ios.cfw.guide/updating-blobless/

It points back to this website for the profile. I can confirm it works if you are OTA Upgrading. If you are on 15.2 or higher(trying to downgrade), you are out of luck & there is NO OTHER way, I'm sorry

@chelaxian Follow this https://ios.cfw.guide/updating-dallas/#required-reading

I can confirm it works. Just restored my iPad pro from 14,3 to 15.1 no problem

Just downloaded the update to 14.8.1 from 14.4 on my iPad 8 wifi. Thanks! Is there any chance 15.1 would get fixed? I hope I can move to that version once I've moved to 14.8

I’m on 14.2.1 jailbroken on A14.

id like to update to 14.5, 14.5.1 or at minimum 14.3 to obtain the untethered unc0ver, is that possible? Any help will be greatly appreciated.

So i am in the Position of having an iPhone 12 with 14.1 Jailbroken and was not able to use any of the guides available to update to a lesser than 15.5 version. (15.4.1)

But using this here and the changing the AssetAudience to 01c1d682-6e8f-4908-b724-5501fe3f5e5c did the trick and im now on 15.4.1 with delayed OTA upgraded from 14.1.

One might ask why you would want to do that. -> with some bugs discovered in the last few weeks it seems like we might soon be able to jailbreak ios 15.0 - 15.4.1 also for A14 devices. So get to 15.4.1 while you can --> it probably wont work for 15.5

See here for jailbreak discussions:

https://twitter.com/tihmstar/status/1542867630742290432?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1542867630742290432%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fidevicecentral.com%2Fjailbreak-news%2Fios-15-0-ios-15-5-jailbreak-news-new-major-components-released-app-signing-forever%2F

https://twitter.com/Jakeashacks/status/1543175140267147264?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1543175140267147264%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fidevicecentral.com%2Fjailbreak-news%2Fios-15-0-ios-15-5-jailbreak-news-new-major-components-released-app-signing-forever%2F

So i am in the Position of having an iPhone 12 with 14.1 Jailbroken and was not able to use any of the guides available to update to a lesser than 15.5 version. (15.4.1)

But using this here and the changing the AssetAudience to 01c1d682-6e8f-4908-b724-5501fe3f5e5c did the trick and im now on 15.4.1 with delayed OTA upgraded from 14.1.

One might ask why you would want to do that. -> with some bugs discovered in the last few weeks it seems like we might soon be able to jailbreak ios 15.0 - 15.4.1 also for A14 devices. So get to 15.4.1 while you can --> it probably wont work for 15.5

See here for jailbreak discussions:

https://twitter.com/tihmstar/status/1542867630742290432?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1542867630742290432%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fidevicecentral.com%2Fjailbreak-news%2Fios-15-0-ios-15-5-jailbreak-news-new-major-components-released-app-signing-forever%2F

https://twitter.com/Jakeashacks/status/1543175140267147264?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1543175140267147264%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fidevicecentral.com%2Fjailbreak-news%2Fios-15-0-ios-15-5-jailbreak-news-new-major-components-released-app-signing-forever%2F

Also something to add here --> if for some reason you need to find a specific AssetAudience for your iPhone Model + Version Combination you can use the pallas.sh script here to find what AssetAudience Results in a working downloadlink (just filter for device and ios version as described there)

So i am in the Position of having an iPhone 12 with 14.1 Jailbroken and was not able to use any of the guides available to update to a lesser than 15.5 version. (15.4.1)
But using this here and the changing the AssetAudience to 01c1d682-6e8f-4908-b724-5501fe3f5e5c did the trick and im now on 15.4.1 with delayed OTA upgraded from 14.1.
One might ask why you would want to do that. -> with some bugs discovered in the last few weeks it seems like we might soon be able to jailbreak ios 15.0 - 15.4.1 also for A14 devices. So get to 15.4.1 while you can --> it probably wont work for 15.5
See here for jailbreak discussions:
https://twitter.com/tihmstar/status/1542867630742290432?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1542867630742290432%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fidevicecentral.com%2Fjailbreak-news%2Fios-15-0-ios-15-5-jailbreak-news-new-major-components-released-app-signing-forever%2F
https://twitter.com/Jakeashacks/status/1543175140267147264?ref_src=twsrc%5Etfw%7Ctwcamp%5Etweetembed%7Ctwterm%5E1543175140267147264%7Ctwgr%5E%7Ctwcon%5Es1_&ref_url=https%3A%2F%2Fidevicecentral.com%2Fjailbreak-news%2Fios-15-0-ios-15-5-jailbreak-news-new-major-components-released-app-signing-forever%2F

Also something to add here --> if for some reason you need to find a specific AssetAudience for your iPhone Model + Version Combination you can use the pallas.sh script here to find what AssetAudience Results in a working downloadlink (just filter for device and ios version as described there)

Can you please explain more? Simply just steps that you’ve done

i decided to upgrade iPhone 12 mini on jailbroken ios 14.2 to 15.4.1 as you mentioned above

thanx so much

See here - just added some steps to the exisiting gist above:

https://gist.github.com/ensingerphilipp/c4cbdee38d21e5fd76f5eadd8c6ed87b

I'm on 11.4.1 (iPhone SE 2016) and after doing each steps I finally get to see the update for 14.8.1 in the Settings but when I try to download and install it shows an popup saying an error occurred downloading iOS 14.8.1. What could it be ? Thx in advance

I used unc0ver without the "block auto updates" option, tried the EnableOTA tweak and checked my free space (I think 10GB is enough for a 4GB update)

like me but after 3 days you will recive an update massage so dont worry