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Download iPhone 15 IPSW — Build 23D8133

Identifier: iPhone15,4  ·  All firmware links redirect directly to Apple's official servers.

✗ This firmware is not signed. This means you cannot restore to it in iTunes.

Release Date: 4th March 2026
Upload Date: N/A
Filename: iPhone15,4_26.3.1_23D8133_Restore.ipsw
Filesize: 9.45 GB
SHA256sum: 864eab98814d3031fd7261383c2c6711b558a168984d26b370e1071cad163f1d
MD5sum: a7855ed5a885076e95c9f6f34cc5a213
SHA1sum: 20fded225621d86086c747676b0944b27963898b
Identifier: iPhone15,4

🔒 Secure download – redirects to Apple.com

Download (9.45 GB)

How to Install?

Before installing make sure to follow these steps given below

Step 1 - Backup your data before installing IPSW

Step 1

Backup your data

Make sure you have backed up your device using iCloud or iTunes on your PC or Mac. Otherwise, you may lose your data.

Step 2 - Connect your Apple device via USB

Step 2

Connect your device

You can connect your device using a Lightning or USB-C cable to your PC or Mac.

Step 3 - Turn off Find My iPhone before restore

Step 3

Turn off Find My

On your device, go to Settings - [your name] Find My - Find My iPhone/iPad, then turn off the Find My iPhone/iPad.

Step 4 - Install the IPSW file using iTunes or Finder

Step 4

Install .ipsw file

In iTunes or Finder (Mac), hold down the Shift key (or the Options key on a Mac) and click on Restore iPhone... button.

Step 5 - Restore your backup after IPSW installation

Step 5

Restore your backup

After iTunes has installed the .ipsw file on your device, follow the on-screen instructions to restore your data.