IPSW Downloads

iOS 15.1 - 19B74 for iPhone 6s

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

Release Date25 October 2021
Upload Date15 October 2021
File NameiPhone_4.7_15.1_19B74_Restore.ipsw
File Size5.05 GB
SHA256sum44207c4130e8bf2898429d71a14503dd76a31f1a403c013ca50df753a37592c8
MD5sumfd7a4691a80fc9f3ac773f52aaa0710a
SHA1suma70c827fcbc61fafdf73f281d9c557d258ab577f
IdentifieriPhone8,1

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 6s to your PC.
  3. Open iTunes and navigate to your iPhone 6s.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_4.7_15.1_19B74_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 6s to reboot.

macOS

  1. Connect your iPhone 6s to your Mac.
  2. Navigate to your iPhone 6s in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_4.7_15.1_19B74_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 6s to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 6s 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 iPhone_4.7_15.1_19B74_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 6s to reboot.