IPSW Downloads

iOS 17.5.1 - 21F90 for iPhone 11

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

Release Date20 May 2024
Upload Date17 May 2024
File NameiPhone12,1_17.5.1_21F90_Restore.ipsw
File Size6.98 GB
SHA256sumafe26e85376192a95c82c58f34dd304d552845a40d9ef1b8dfc3b9c8ae262351
MD5sum341f77265246a324ae3781105a3d4639
SHA1sum3f5cfa129fd8cd3e18fb4e5787807818c74c90f3
IdentifieriPhone12,1

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 11 to your PC.
  3. Open iTunes and navigate to your iPhone 11.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone12,1_17.5.1_21F90_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 11 to reboot.

macOS

  1. Connect your iPhone 11 to your Mac.
  2. Navigate to your iPhone 11 in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone12,1_17.5.1_21F90_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 11 to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 11 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 iPhone12,1_17.5.1_21F90_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 11 to reboot.