IPSW Downloads

iOS 15.1 - 19B74 for iPhone 6s Plus

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

Release Date25 October 2021
Upload Date15 October 2021
File NameiPhone_5.5_15.1_19B74_Restore.ipsw
File Size5.20 GB
SHA256sumbcf974cc79c1a13bc87ef6af1971f1e2e951fadfa71ce4007b77eba9531b7130
MD5sumf615a72971f1498b328821fdc276e608
SHA1sumff7ed58a69c90b318d827c98a61bfbaab6dbcbf0
IdentifieriPhone8,2

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 6s Plus to your PC.
  3. Open iTunes and navigate to your iPhone 6s Plus.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_5.5_15.1_19B74_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 6s Plus to reboot.

macOS

  1. Connect your iPhone 6s Plus to your Mac.
  2. Navigate to your iPhone 6s Plus in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_5.5_15.1_19B74_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 6s Plus to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 6s Plus 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_5.5_15.1_19B74_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 6s Plus to reboot.