IPSW Downloads

iOS 17.1.2 - 21B101 for iPhone 15

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

Release Date30 November 2023
Upload Date27 November 2023
File NameiPhone15,4_17.1.2_21B101_Restore.ipsw
File Size7.47 GB
SHA256sum574981e5d332e50afe80c9cec968d5ff94172d839f940407ee78e24d29c0888c
MD5sum0c667f58176700d6bd8f638c92dabdb5
SHA1sumb0905ef064c4740a3c42006bdf160075f26e9b6c
IdentifieriPhone15,4

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 15 to your PC.
  3. Open iTunes and navigate to your iPhone 15.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone15,4_17.1.2_21B101_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 15 to reboot.

macOS

  1. Connect your iPhone 15 to your Mac.
  2. Navigate to your iPhone 15 in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone15,4_17.1.2_21B101_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 15 to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 15 to your PC.
  3. Open a terminal and navigate to the IPSW file you downloaded, e.g., cd ~/Downloads.
  4. To perform a full erase restore, type idevicerestore -e iPhone15,4_17.1.2_21B101_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 15 to reboot.