iPhone XS Max (iOS 18.7) and Apple Watch 7 (11.6.1) incompatible!

There is a problem with the latest updates!!!!!!!!

After updating my iPhone XS Max to iOS 18.7 It is NOT possible to update my Apple Watch 7 to watch OS 11.6.1

My iPhone is up to date! When I open the Watch software update on the iPhone it tells me to update my iPhone IOS. When I try to update the watch within the Watch OS software update settings it tells me that there is a problem. I have shut down and restarted both devices. Nothing works. I am now the sad owner of an Apple Watch 7 (gps) that cannot be updated.



I already updated to 18.7 !!!!!


this is NOT normal. Please beta test your updates!!!!!


Thanks for any help.


[Edited by Moderator]

Apple Watch Series 7, watchOS 11

Posted on Sep 15, 2025 5:25 PM

Reply
29 replies

Sep 16, 2025 3:31 AM in response to józsef105

józsef105 wrote:

me too:

Since updating my iPhone to iOS 18.6, I have been unable to use my Apple Watch. Prior to that update, the watch worked flawlessly and had successfully gone through multiple updates since I started using it in June 2024.
[snip]

Please escalate this case and provide a solution as soon as possible. A working Apple Watch has become bricked following an official iOS update, which is unacceptable.

Thank you for your assistance.

Everyone here is simply another user like you (Apple customers) sharing our knowledge. We can’t escalate the problem, only you have the rights for that.


I suggest you contact Apple Support directly as this is now a problem with the new software released yesterday. Start with (link) https://getsupport.apple.com

Sep 19, 2025 2:10 AM in response to geoMac Barcelona

Hi All,

I am using Iphone XR with ios 18.7 & Apple watch 9 with Watch O/s 11.6.1 (22U90)


I am also facing the same issue and have been in touch with Apple care.


They have asked me to the following:

  1. Unpair the watch with phone & re-pair and check - atleast 3 times.
  2. Connect the watch to another iPhone of higher model (15 Plus) & check.
  3. They said since i have beta Update, the phone is incompatibe, a laughable answer as the current update is not beta & beta updates have been removed.
  4. They have asked for 24 hours to resolve the issue, lets hope for all our sakes they are able, corssing my fingers.


Every time the error is the same.


So it clearly proves that "They dont have a solution."



Sep 19, 2025 3:02 AM in response to LD150

Good advice about not pairing Watch with a newer iPhone and trying to pair it back to my antiquated iPhone XS Max. Apple should be more clear about which iPhones can pair with the latest WatchOS. Sadly, I have an updatable Watch that can’t be updated because my iPhone XS Max was cut off from ios26. Now I have 2 devices that are not updatable instead of one.

Sep 25, 2025 2:40 AM in response to quanhApple

quanhApple wrote:

Me too, iphone 11 ios 18.7 and AW 7 cannot update to 11.6.1, always this error. Of course my device is connected to Internet!
https://discussions.apple.com/content/attachment/0ce1d3f5-b9be-4f69-b64c-9f6db35ae587

Your phone is connected to wifi but…

  1. your router may not be connected to internet
  2. your watch may not be connected to wifi
  3. you may have VPN installed, uninstall it.

Sep 15, 2025 11:47 PM in response to geoMac Barcelona

I have this problem too.. when I installed the iOS 18.6 update, the clock icon disappeared from the battery status widget.. back then the watch had the version of watchOS that came in the box.. (I think it was before 11.6) I wanted to update it because iOS 18.6 offered it.. after starting the update, nothing happened… then it displayed an error. After several attempts, I decided to reconnect the pairing, I disconnected the watch from my phone. I wanted to pair it again but I couldn't use it because it starts pairing but asks for an update. When I start it, the status bar doesn't start either and it says that the update was unsuccessful😞 I'm sorry because I wanted to do the pairing again a few days ago.. then at least it showed the time but since then I can't use my watch.. because I can only get to the language and region selection. It asks me to continue from my iPhone.. but I encounter the problems described above😔

Sep 16, 2025 1:45 AM in response to geoMac Barcelona

me too:


Since updating my iPhone to iOS 18.6, I have been unable to use my Apple Watch. Prior to that update, the watch worked flawlessly and had successfully gone through multiple updates since I started using it in June 2024.


After installing iOS 18.6:

• The Apple Watch icon disappeared from the battery widget,

• My iPhone prompted me to update the Watch, but the update failed,

• After several failed attempts, I unpaired the Watch,

• Now, during the re-pairing process, the Watch requests a software update, which never starts and eventually fails with “Update Failed”.


Since then, my Watch has been completely unusable. It only gets to the language and region selection screen. The iPhone tries to update the Watch during pairing, but the update process fails every time.


This issue still persists even after updating my iPhone to the latest iOS 26. The problem clearly wasn’t resolved in the latest release either.


It’s important to note that I am not the only one affected – several users are reporting the same issue, so this appears to be a broader software bug.


Please escalate this case and provide a solution as soon as possible. A working Apple Watch has become bricked following an official iOS update, which is unacceptable.


Thank you for your assistance.


Sep 24, 2025 10:22 AM in response to R-A-H

R-A-H wrote:

Same situation, iOS 18.7 installed on 2 iPhone XR phones, which generated the infinity loop between two Apple Watches, one a 6 and the other a 7. The watches cannot be updated. Please resolve this issue.

If you managed to update the watches to OS26 they would stop working with any phone older than iphone 11

Sep 16, 2025 3:54 AM in response to geoMac Barcelona

Apple SHOULD REALLY issue a patch because I cannot install watchOS26 on a compatible Watch7:

from Apple support page:

The latest software for Apple Watch Series 7 is watchOS 26.

To install watchOS 26 on your Apple Watch Series 7:

1. *Update your iPhone*: Ensure your iPhone is running iOS 26 (available for iPhone 11 models and newer).

2. *Open Watch App*: On your iPhone, open the Watch app and select "Software Updates".

3. *Download and Install*: Tap "Download and Install" to begin the update process.

4. *Keep your Apple Watch charged*: Ensure your watch has at least 50% battery life and is connected to a charger during the update.

The installation process may take around 1-2 hours, depending on your internet connection and other factors ².

Sep 20, 2025 4:39 AM in response to SSDEOKULE

SSDEOKULE wrote:

My Son who has a Iphone 16 Pro Max & Watch 8 is also facing the same issue. He is also using Ios 18.7.
https://discussions.apple.com/content/attachment/62ee5b06-31d8-4744-95ce-42b8b46c9440


[Edited by Moderator]

That is not the same issue. He is almost out of battery, he is on low power setting, nothing will happen til he is on wifi, with full battery, on normal power and preferably plugged into charger.

iPhone XS Max (iOS 18.7) and Apple Watch 7 (11.6.1) incompatible!

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