How do I downgrade from iOS 27 to iOS 26?

pets242 wrote:

Downgrade to iOS 26

It's a one page thread. If you are on iOS 27, you CANNOT downgrade to iOS 26.

You cannot downgrade to just any version of iOS whenever you want. Apple only allows a particular iOS version to be installed while that version is still being signed by Apple.

If you are currently on a newer version of iOS 27, you may be able to downgrade to iOS 26.7.1, provided Apple is still signing that firmware version. Once Apple stops signing it, the downgrade will normally no longer be possible through the standard restore process.

If you already have the correct IPSW firmware file for your exact iPhone model, you can use it to attempt the installation through Finder on a Mac or Apple Devices/iTunes on Windows. However, having the IPSW file alone is not enough—Apple's signing server must still authorize that particular firmware version.

In short:

• IPSW file available + Apple still signing it: You may be able to install iOS 26.7.1.
• IPSW file available + Apple has stopped signing it: The restore will generally fail.
• No IPSW file: You can still download the appropriate IPSW, but it must be for your exact iPhone model.
• A downgrade can also require a full restore, so make sure you have a current backup before proceeding.

Therefore, the first thing to check is whether Apple is still signing iOS 26.7.1 for your specific iPhone model.

pets242 wrote:

Downgrade to iOS 26

The original post is dated "Aug 17, 2026", which means that the person who started this thread was running a beta version of iOS 27. You can remove a beta.

You're posting after the release of iOS 27, which suggests that you installed the production version and now want to downgrade – something that's never been supported. You will have to live with iOS 27.

You can only remove the beta version to return to iOS 26. You will not be able to go back to any previous version of iOS. All the information is provided by Niel in the Support Article and hopefully you made an archived backup before installing the beta, because your device will need to be wiped using a computer and you will need the backup that was created with iOS 26.

You might want to do this, but you cannot do this.

Can you remove my iOS 27 and downgrade to before iOS 26.0

No

I disagree. Sometimes the squeaky wheel gets the grease.

I instantly regretted the upgrade to 27.

My iPhone 16 now feels annoyingly sluggish. Liquid Glass effects are glitchy, and the gloomy-looking Siri drive me bananas.

unfortunately there seems to be no plan B.

Click here and follow the instructions. This will only work during the beta period and requires erasing the unit; you won't be able to restore a backup made from it to a previous release.

(264664)

Downgrade to IOS 26.0

No

musah251 wrote:

I’m using a JV Sim when I update it into iOS 27, my Sim side is not coming again

This thread is about downgrading iOS, not fixing your SIM problems. Start your own thread to ask for help, not here in this one.

Unfortunately, Apple makes decisions on behalf of its users. Consequently, operating system updates are not necessarily beneficial; in fact, they can sometimes be quite frustrating. For instance, in version 27, Apple’s developers decided—for reasons unknown—to set "Crop" as the default tool for photo editing, even though the "Adjust" tool is far more efficient. Why? We have no idea! Was any more valuable improvement made to the photo editing process such as better tools or use Ai to remove unwanted subjects in photo and etc ? No. And does Apple ever consult its users regarding the limitations these changes impose? Certainly not. Just how acceptable is this policy?

In my opinion, since the new version of the operating system is so annoying, Apple should at least officially allow us to revert to the older version so we don't have to deal with as much frustration.

Not trying to start a debate, but multiple tools were improved in Photos app. I’m only a casual user and I noticed the changes. You’ll get more assistance with the Photos app if you post your questions in the dedicated Photos community. Apple and Apple Support do not participate in the communities here. They only moderate our posts to insure all user guidelines are followed in regard to content and user behavior. Everyone posting and commenting are just fellow users. Your comments will not be reviewed by Apple. Apple may make changes based partially on the feedback they receive through their official channel, linked below .

Product Feedback - Apple

Apple typically does not formally reply to feature requests such as yours. The

Mr_323 wrote:

Unfortunately, Apple makes decisions on behalf of its users.

Apple makes decisions based on feedback from the user base, developers, and design philosophy. Some users, like yourself, are always unhappy with change no matter what. Those users think their desires are paramount and their design philosophy is an imperative to be followed without debate.

By the way you will never get a letter from Apple asking for your opinion on a design change, not with 2.5 billion devices in service around the world.

Your opinions are yours. You do you.

3000ways wrote:

I disagree. Sometimes the squeaky wheel gets the grease.

I instantly regretted the upgrade to 27.

My iPhone 16 now feels annoyingly sluggish. Liquid Glass effects are glitchy, and the gloomy-looking Siri drive me bananas.

unfortunately there seems to be no plan B.

Plan B is to identify whatever you installed that is not compatible with 27.2.1

I need your help. Can you remove my iOS 27 and downgrade to before iOS 26.0

I’m using a JV Sim when I update it into iOS 27, my Sim side is not coming again

Contact your carrier for issues with their service.

Downgrade to iOS 26

i want update IOS26

Downgrade to IOS 26.0

I want to downgrade to ios 26

lobsterghost1 wrote:

..

It's a one page thread...

On reflection that was an optimistic statement 😂