How do I install iOS 26.1 beta on my iPhone 15?

Connect your device to your computer. Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina and later). Hold Option (Mac) or Shift (Windows) and click Check for Update or Restore. Select the downloaded IPSW file and follow the on-screen instructions.

What are SHSH blobs and how do I save them?

SHSH blobs are cryptographic tickets Apple uses to verify firmware installations. Saving them while a version is still signed lets you potentially restore to it later. Use TSS Saver (tsssaver.1conan.com) or the blobsaver app with your device ECID.

Home / iPhone / iPhone 15 / iOS 26.1 beta (23B5059e)

iOS 26.1 beta

Build 23B5059e

No Longer Signed

iPhone 15 iPhone15,4

Released

October 6, 2025

File Size

10.34 GB

Filename

iPhone15,4_26.1_23B5059e_Restore.ipsw

Download IPSW All Build 23B5059e Firmware

Important Notice About Signing Status

Signing status was last updated less than a minute ago. Apple can stop signing at any time without notice.

Verify current status at IPSW.dev

Beta Firmware Notice

For official public releases, visit IPSWDL.com

Firmware Details

Device	iPhone 15 (iPhone15,4)
OS Type	iOS
Version	26.1 beta
Build ID	23B5059e
Release Date	October 6, 2025
Signing Status	Unsigned Status last checked April 14, 2026. Verify at IPSW.dev
Filename	iPhone15,4_26.1_23B5059e_Restore.ipsw
File Size	10.34 GB
Download URL	https://updates.cdn-apple.com/2025FallSeed/fullrestores/093-52992/01A9D5F0-10C2-48BB-9055-3061B64ACCD5/iPhone15,4_26.1_23B5059e_Restore.ipsw

Installation Instructions

How to install this firmware

Download the IPSW file.
Connect your device to your computer.
Open iTunes (Windows / macOS Mojave and earlier) or Finder (macOS Catalina and later).
Hold Option (⌥) on Mac or Shift on Windows and click Check for Update or Restore.
Select the downloaded IPSW file and follow on-screen instructions.

This version is not currently signed by Apple. Installation will fail unless you have saved SHSH blobs and are using futurerestore.

Other Versions for this Device

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