Apple Stops Signing iOS 18.0

Thursday October 10, 2024 12:10 pm PDT by Juli Clover

Apple today stopped signing iOS 18.0, preventing iPhone users who have upgraded to iOS 18.0.1 from downgrading to iOS 18. Apple released iOS 18.0.1 a week ago on October 3.

Generic iOS 18 Feature Real Mock
It is not unusual for Apple to stop signing older versions of iOS within a week or two after a new version of iOS is released. When Apple stops signing an update, it can no longer be installed on an iPhone due to a server-side software verification check that happens before new software is installed, so those who have upgraded to the latest version of iOS 18 cannot downgrade to iOS 18.0.

Apple prevents downgrading to older versions of iOS to encourage iPhone users to keep their operating systems up to date with the latest security fixes. iPhone 16 users who have upgraded to iOS 18.0.1 can no longer install any older software, but iPhone 15 and earlier users have the option of downgrading to iOS 17.7, which is also still signed.

The iOS 18.0.1 update addressed bugs with the touch screen, Camera, and Messages app, plus it fixed two vulnerabilities.

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Top Rated Comments

ThomasJL

27 months ago

Because I value stability and reliability, I will be staying on iOS 17.7 and plan to upgrade to iOS 18.6 in September 2025, one week before iOS 19 is released.

Score: 10 Votes (Like | Disagree)

Allen_Wentz

27 months ago

I never upgrade. I just leave the phone on the .0 version it came with. Don't want to bother with learning new bugs while the fix old ones.

My iPhone 14 is still on iOS 16.0 And even though it have numerous flaws some stuff aren't fixed anyway. Other bugs will have been fixed, but new one will be loaded to your device no matter what. What they ought to do:

Have users make choices:
- download bug fixes software
- allow removal of features / software
- download new features / software
- disagree to new terms and conditions while keep on using current software
- allow downgrading software like people can do on the Mac.

Sorry but I think that is dumb policy. X.0 versions always have bugs that get improved with X.1 or X.01 versions, and iOS 18.0 was a perfect example. 18.0 had a bug that caused the display not to sense touch.

I agree with some of your other points like disagree to new terms and conditions while keep on using current software.

Score: 6 Votes (Like | Disagree)

zapmymac

27 months ago

17.7 & happy 13PM… won’t jump to 18 until there is a severe zero day that’s exploited this year. I just have a bad feeling about 18.

Score: 3 Votes (Like | Disagree)

Hank001

27 months ago

And who would downgrade to 18.0?

I never upgrade. I just leave the phone on the .0 version it came with. Don't want to bother with learning new bugs while the fix old ones.

My iPhone 14 is still on iOS 16.0 And even though it have numerous flaws some stuff aren't fixed anyway. Other bugs will have been fixed, but new one will be loaded to your device no matter what. What they ought to do:

Have users make choices:
- download bug fixes software
- allow removal of features / software
- download new features / software
- disagree to new terms and conditions while keep on using current software
- allow downgrading software like people can do on the Mac.

Score: 3 Votes (Like | Disagree)