AppleTV 4K HD - Cannot update from 17.1 to 26

Question

mostrows Author

Level 1

4 points

AppleTV 4K HD - Cannot update from 17.1 to 26

model A1842
Performed full reset.
Every attempt to upgrade results in error message - "Unable to update - try again later".

HomePod, 18

Posted on Oct 2, 2025 6:01 PM

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Answer 1

vazandrew

Level 8

40,834 points

Oct 3, 2025 2:56 PM in response to mostrows

Make sure to do the reset and update option. That will ensure it's put back to factory settings as well as reinstalling TVOS (which typically will be to the latest version). If you still confirm it hasn't changed then it's best to talk directly with a rep from Apple.

That link does take me to options to do so, but if that doesn't work for you try the one below

Contact Apple Support - Apple Support

You can also take the unit into your local Apple Store so they can have a look.

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Answer 2

Urquhart1244

Level 10

146,106 points

Oct 3, 2025 6:06 AM in response to mostrows

Possibly the jump from 17.x to 26.0 (skipping v18) is a bit large for the internal updater.

Update your Apple TV - Apple Support

Get help

Try the (software) Restart option first, then try the update. If issues persist, try Reset and Update.

Else contact Apple Support for further assistance.

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Answer 3

mostrows Author

Level 1

4 points

Oct 3, 2025 7:17 AM in response to Urquhart1244

The jump possibly is too big. If that is the case, then how do I update to 18? I see no option to do that.

But I had auto-update on forever and for some reason it refused to budge from 17.1.

I've tried all combinations of restart, reset, update.

"contact Apple Support" eventually leads me back to these forums.

Looks like the device is effectively un-upgradeable from now on.

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