IPSW Downloads

iOS 11.0.2 - 15A421 for iPhone 8

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

Release Date03 October 2017
Upload Date28 September 2017
File NameiPhone10,4_11.0.2_15A421_Restore.ipsw
File Size2.47 GB
SHA256sum27f1cb2e8e761a99eb5c8dba3c506ac1134e44f9027e58af5aeca6bae67168bd
MD5sum3f2d22be92f01e6d6c80bed4e63a506d
SHA1sumd6bff1e919759408860fde4a4e455c168ff6b8e3
IdentifieriPhone10,4

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 8 to your PC.
  3. Open iTunes and navigate to your iPhone 8.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone10,4_11.0.2_15A421_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 8 to reboot.

macOS

  1. Connect your iPhone 8 to your Mac.
  2. Navigate to your iPhone 8 in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone10,4_11.0.2_15A421_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 8 to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 8 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 iPhone10,4_11.0.2_15A421_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 8 to reboot.