MacBook Pro M1 (2021) macOS stuck on version 26.6.1 and unable to update

I think Apple's download servers are being hit hard. I'm unable to download the Golden Gate installer with a couple of different errors. I got as far as about 83%......and next time I tried to fetch it again...it started the download at 1% again (I had a script to try again if an error was encountered since many times I am unable to download the installers on the first attempt even when Apple hasn't launched a new OS or pushed any new updates).

I would say wait a week and try again. Unless you wish to test out the new OS, it is best to wait a few months for the release day bugs to be fixed anyway. Depending on the severity of the changes between Tahoe & Gold Gate, some third party software may not yet be fully compatible with the new OS (especially hardware drivers).

Try in safe mode. BTW today scanning has taken a few minutes until it succeeds so be patient.

Demiou wrote:

My MacOS is stuck on old version:

MacBook Pro M1 (2021)

I get Up to date: but I am still on Tahoe 26.6.1

on Terminal says: ~ % softwareupdate --list-full-installers

Finding available software

Software Update found the following full installers:

* Title: macOS 27 Golden Gate, Version: 27.0, Size: 17969056KiB, Build: 26A428, Deferred: NO

* Title: macOS Tahoe, Version: 26.7, Size: 17951133KiB, Build: 25G229, Deferred: NO

* Title: macOS Tahoe, Version: 26.6.2, Size: 17953734KiB, Build: 25G83, Deferred: NO

* Title: macOS Tahoe, Version: 26.6.1, Size: 17938060KiB, Build: 25G76, Deferred: NO

...

...

If I try to download the installer: ~ % softwareupdate --fetch-full-installer --full-installer-version 27.0

Scanning for 27.0 installer

gets stuck on Scanning and I can not update.

Yesterday 14 September. I got Safari 27.0 Update, and nothing more.

What is the problem and how can I SOLVE IT?

As other have said, wait until Apple's servers are less busy.

I have an iPhone and an Apple Watch, until yesterday both were on OS 26. I had not even been offered the upgrade to 27 for those two devices, and 27 has been out for weeks. So I asked each of them to check, and OS 27 was then identified and offered. Both of them took an exceptionally long time to download. Maybe each an hour; normally these downloads have taken 10-15 minutes at most in the past, and these were only few GB. My wife's phone can also go to 27 but I plan to wait a few weeks longer for that.

Demiou wrote:

My MacOS is stuck on old version:

MacBook Pro M1 (2021)

I get Up to date: but I am still on Tahoe 26.6.1

on Terminal says: ~ % softwareupdate --list-full-installers

Finding available software

Software Update found the following full installers:

* Title: macOS 27 Golden Gate, Version: 27.0, Size: 17969056KiB, Build: 26A428, Deferred: NO

* Title: macOS Tahoe, Version: 26.7, Size: 17951133KiB, Build: 25G229, Deferred: NO

* Title: macOS Tahoe, Version: 26.6.2, Size: 17953734KiB, Build: 25G83, Deferred: NO

* Title: macOS Tahoe, Version: 26.6.1, Size: 17938060KiB, Build: 25G76, Deferred: NO

...

...

If I try to download the installer: ~ % softwareupdate --fetch-full-installer --full-installer-version 27.0

Scanning for 27.0 installer

gets stuck on Scanning and I can not update.

Yesterday 14 September. I got Safari 27.0 Update, and nothing more.

What is the problem and how can I SOLVE IT?

You can simply try later...

I had all kinds of issues trying to get 26.6.2 and 26.7 point updates respectfully...even after the same Safari 27 update.

So don't feel alone...

To be proactive you can submit your Apple Feedback here: Product Feedback - Apple

Yesterday I gave up after 61 attempts (automated script). Today I was able to download the full Golden Gate installer in just 15 attempts. If I didn't need to test Golden Gate out I would have waited.

Just wait. There is no need to rush into a new OS with brand new & unknown bugs and issues.

Have a MacBook Pro M3 running OS 26.2 and cannot get the thinking-icon to stop and give me the OS 27.0

Golden Gate update.

on Terminal says: ~ % softwareupdate --list-full-installers

Finding available software

Software Update found the following full installers:

* Title: macOS 27 Golden Gate, Version: 27.0, Size: 17969056KiB, Build: 26A428, Deferred: NO

* Title: macOS Tahoe, Version: 26.7, Size: 17951133KiB, Build: 25G229, Deferred: NO

* Title: macOS Tahoe, Version: 26.6.2, Size: 17953734KiB, Build: 25G83, Deferred: NO

* Title: macOS Tahoe, Version: 26.6.1, Size: 17938060KiB, Build: 25G76, Deferred: NO

...

...so the MAC is eligible for 27.0. Should I download the installer by running sofwareupdate --fetch-full-installer --full-installer-version 27.0?

ellie2847 wrote:

Have a MacBook Pro M3 running OS 26.2 and cannot get the thinking-icon to stop and give me the OS 27.0

..so the MAC is eligible for 27.0. Should I download the installer by running sofwareupdate --fetch-full-installer --full-installer-version 27.0?

Only if you want it.