I upgraded from iOS 18 to 26, but the battery drain on iOS 26 is fast, and the lag is terrible. I want to know how to downgrade from iOS 26 to 18.

Apple user report

Have you updated to iOS 26, but are not happy with the results? Many users have experienced problems such as iOS 26 is unable to check for updates, or iOS 26 makes their iPhone overheat, and causes lagging. They are already tired of iOS 26, so they want to uninstall iOS 26 and return to iOS 18. In this article, we’ll explain how to downgrade from iOS 26 to 18 safely and easily, and provide four effective methods to help you go back to iOS 18 without data loss or stress.

Can I downgrade from iOS 26 to 18 on iPhone and iPad?

Yes, you can! It’s possible to downgrade from iOS 26 to 18 on iPhone and iPad, but only under certain conditions. Apple usually allows downgrading to the previous iOS version only while it’s still signed.

For security reasons, Apple adds a signature to the iOS version to confirm its authenticity. If Apple stops signing it, you won’t be able to downgrade on your iPhone/iPad. 

Luckily, iOS 18 is still being signed, and you can download the IPSW file and manually downgrade iOS 26 to 18 via iTunes, or choose a smart iOS downgrade program such as Tenorshare ReiBoot to revert to iOS 18 with just one click.

4 proven methods comparison (downgrade iOS 26 to 18)

How to downgrade from iOS 26 to 18 without data loss

Method 1: One-click downgrade iOS 26 to 18 via iOS professional downgrade program – Recommended method (fast and easy to use, no data loss)

Looking for a fast way to switch from iOS 26 back to iOS 18? This iOS downgrade program Tenorshare ReiBoot allows you to downgrade iOS 26 to 18 without data loss on your iPhone or iPad.

Unlike methods that involve iTunes or Finder, which usually require a full restore and often erase all your data, ReiBoot allows you to downgrade to iOS 18 without iTunes. It doesn’t require jailbreaking your device, and you don’t need to be tech-savvy to use it.

Why use Tenorshare ReiBoot to downgrade iOS?

• One-click downgrade/upgrade iOS without iTunes: 100% success rate!





• No data loss: Downgrade iOS, but keep your photos, messages, and data safe.





• Fast and efficient: Easily downgrade iOS within 20 minutes.





• All-in-one tool: Downgrade and repair 150+ iOS problems and recover iPhone, with fast, safe results.

How to downgrade iOS 26 (including iOS 26 beta) to 18 with ReiBoot without losing data?

Step 1: Free Download ReiBoot on your computer. Connect your iPhone or iPad to the computer. Click on “iOS Upgrade/Downgrade” in the ReiBoot menu.

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Tenorshare

Step 2: Next, click “Download” to get the iOS 18 firmware package file you want. Tap “Initiating downgrade” to downgrade iOS 26.

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Tenorshare

Step 3: In a few minutes, click “Done’. ReiBoot will automatically remove iOS 26 and install the stable iOS 18 on your device.