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How to Downgrade iOS 27 to 26 Easily in 2026 - ReiBoot

By Jenefey Aaron

2026-06-05 / iOS 27

So you installed iOS 27 beta and things aren’t going as smoothly as you hoped. Maybe apps are crashing, your battery is draining faster than ever, or some features you rely on just aren’t working right. Whatever the reason, you want to get back to stable iOS 26 — and you want to do it without losing your data.

You’re in the right place. This guide covers every method to downgrade iOS 27 to 26, including options that don’t require a computer.

Can You Downgrade iOS 27 to 26? (What You Need to Know First)

Before jumping in, there are a few important facts:

• Apple signs iOS versions — Apple only allows installation of iOS versions they’re actively “signing.” Once Apple stops signing iOS 26, downgrading through iTunes/Finder becomes impossible. Act quickly.
• Data backup is critical — Downgrading wipes your device. Back up via iCloud or your computer before starting.
• Third-party tools offer more flexibility — Tools like Tenorshare ReiBoot can handle downgrades even in complex situations and with a far simpler process.

Method 1: Downgrade iOS 27 to 26 Using iTunes or Finder (With Computer)

This is Apple’s official method. It works as long as iOS 26 is still being signed by Apple.

What You Need

• A Mac or Windows PC
• iTunes (Windows / macOS Mojave or older) or Finder (macOS Catalina and later)
• A Lightning or USB-C cable
• An iOS 26 IPSW firmware file (download from ipsw.me)
• A full backup of your device

Steps on How to Downgrade iOS 27 to 26 via IPSW File

Step 1: Back up your iPhone Connect your iPhone to your computer and back it up through iTunes/Finder, or make sure your iCloud backup is current.

Step 2: Download the iOS 26 IPSW file Go to ipsw.me, find your exact iPhone model, and download the iOS 26 firmware file. Make sure it’s the right one for your device — an incompatible IPSW will cause errors.

Step 3: Put your iPhone into Recovery Mode: Press and release Volume Up, press and release Volume Down, then press and hold the Side button until the Recovery Mode screen appears. -

Step 4: Restore with the IPSW file - Open iTunes or Finder and select your device. - Hold Option (Mac) or Shift (Windows) and click Restore iPhone. - Select the iOS 26 IPSW file you downloaded. - Confirm and wait for the process to complete.

Step 5: Set up your iPhone from your backup.

Limitations of This Method

• The process is complicated and not beginner-friendly
• Many users encounter iTunes errors, freezing, or restore failures during the downgrade process

Method 2: How to Downgrade iOS 27 to 26 Easily — Using Tenorshare ReiBoot

If the iTunes method failed, Tenorshare ReiBoot is the best solution. ReiBoot is a professional iOS system repair and downgrade tool trusted by millions of users worldwide.

Why ReiBoot Is the Recommended Method

• Downgrades iOS 27 to 26 with just a few clicks
• Works even when your iPhone is stuck, frozen, or in a boot loop
• Significantly easier than the manual iTunes process
• Option to downgrade without data loss (varies by scenario)
• Supports all iPhone models, including the latest
• No technical knowledge required

How to Use ReiBoot to Downgrade iOS 27

• Download and install ReiBoot on your computer. Then, connect your iPhone/iPad to the same PC. Trust your iDevice when asked. Tap "iOS Upgrade/Downgrade" on the main interface.

  

• Then, pick "Downgrade" to start the process.

  

• Hit "Download" to get the current iOS 18 firmware package.

  

• Tap "Initiating downgrade" once the package is downloaded.

  

• ReiBoot will automatically uninstall iOS 27 beta and install the stable iOS 26 version on your device. Once the process is complete, simply click Done.

  

Note:

ReiBoot also handles situations where your iPhone is stuck in Recovery Mode, boot loops, or other system issues, making it a must-have tool for anyone who tests beta software regularly.

How to Downgrade iOS 27 to 26 Without Losing Data

Losing data is the biggest fear with any iOS downgrade. Here’s how to minimize risk:

• iCloud Backup: Go to Settings → [your name] → iCloud → iCloud Backup → Back Up Now
• Computer Backup: Connect to iTunes/Finder and create an encrypted backup (enables backup of passwords and health data)
• Manual saves: Screenshots, notes, and photos you don’t want to lose
• Backup & Restore via ReiBoot: use ReiBoot new feature - Data Backup & Restore before downgrading

Troubleshooting: Common iOS 27 Downgrade Problems

“iTunes cannot restore the iPhone because the firmware is not compatible”

You downloaded the wrong IPSW for your model. Double-check your exact iPhone model in Settings → General → About, then re-download the correct IPSW from ipsw.me.

“The iPhone could not be restored. An unknown error occurred (4013)”

This usually indicates a hardware or USB connection issue. Try a different cable, a different USB port, or restart both your iPhone and computer. If the problem persists, use ReiBoot — it handles these error codes automatically.

“iOS 26 is no longer available”

Apple has stopped signing this version. The iTunes/Finder method will no longer work. ReiBoot may still be able to assist — check the Tenorshare website for the latest compatibility information.

iPhone stuck in Recovery Mode during downgrade

This is where ReiBoot really shines. Its Exit Recovery Mode feature can get your device out of the loop in one click, without data loss.

Frequently Asked Questions about iOS 27 Beta Downgrade

How long does it take to downgrade iOS 27 to 26?

The iTunes/Finder method takes 20–40 minutes. ReiBoot typically completes the downgrade in 10–20 minutes with a faster, more streamlined process.

Will I lose all my data when I downgrade?

A standard downgrade via iTunes/Finder will erase your device. That’s why backing up first is essential. ReiBoot offers a data-preserving option in certain scenarios.

Is it safe to downgrade iOS 27 beta?

Yes, it’s completely safe when done correctly using the methods described here. The risk is mainly data loss if you skip the backup step.

Can I downgrade without a computer?

The standard Apple method requires a computer. However, tools like ReiBoot require a computer to run as well, but dramatically simplify the process. A purely on-device downgrade is generally not possible unless Apple provides an OTA path.

What if Apple stops signing iOS 26?

Once Apple closes the signing window, the official iTunes method stops working. Third-party tools like ReiBoot may have additional options. Check Tenorshare’s site for the most current information.

Does downgrading void my warranty?

No. Changing your iOS version does not void Apple’s warranty.

Summary: Which Method Should You Use?

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Our recommendation: If you want the fastest, most reliable downgrade experience with the least technical hassle, use Tenorshare ReiBoot. It handles IPSW sourcing, device mode switching, and error recovery automatically — steps that trip up many users in the manual process.

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Tenorshare ReiBoot - Fix iOS Issues

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• Repair iPhone system issues like boot loops, black screens or apple logo effortlessly.
• Easily upgrade or downgrade your iOS without data loss – no tech skills needed.