Is IOS 15.8.3 still receiving security updates?

This is for my company and we need to understand if our devices are still receiving security updates

Posted on Mar 3, 2025 09:04 AM

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Posted on Mar 10, 2025 10:50 AM

It is "up to date" as far as the capability of the iPhone model is concerned.


Or, in other words, the iPhone cannot be updated to run iOS 16, 17 or 18.



17 replies

Mar 3, 2025 09:20 AM in response to Jcreal

15.8.3 is the last security update that was released for iOS 15.

It was released on July 29, 2024.


Apple supports the current version and the 2 previously major versions of iOS.

iOS 15 is technically no longer supported.


It is possible that it could get a security update in the future if a major flaw is discovered, but don’t count on it.


If your company is running 15.8.3, you need to upgrade your devices to ones that are capable of running a supported version of iOS.


Mar 3, 2025 09:39 AM in response to Jcreal

Technically no, since last year in July, but some users have reported an update over the weekend which has kept the version number at 15.8.3 but left the iPhone at the "Hello" screen, typically seen after an update.


One can only guess what the update was, as there is no info about it on Apple's security update page, but I have seen a few reports on the forums about it, so its safe to assume something was updated.


We may get some more details further in the day.

May 17, 2025 08:39 AM in response to amarot97

amarot97 wrote:

I need iPhone 6s Plus 15.1.3 update barson


You cannot pick and choose a version of iOS. If you have an iPhone 6s Plus, you can update it to the latest release of iOS 15. If it is actually an iPhone 6 Plus (no "s"), you can only update it to the latest release of iOS 12.


About iOS 15 Updates - Apple Support

About iOS 12 Updates - Apple Support

Update your iPhone or iPad - Apple Support

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Is IOS 15.8.3 still receiving security updates?

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