IPSW Downloads

iOS 11.3.1 - 15E302 for iPhone 6s Plus

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

Release Date24 April 2018
Upload Date14 April 2018
File NameiPhone_5.5_11.3.1_15E302_Restore.ipsw
File Size2.72 GB
SHA256sumf808b7981e5b2b8b6fd2bfddbeedf2ad965d77316297860d6b492f3a0cc59920
MD5sumd4a52753383801ea99b802ee67cfd842
SHA1sum706a0d92aaa759aef92e8622d8807b28bf05900d
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_11.3.1_15E302_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_11.3.1_15E302_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_11.3.1_15E302_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 6s Plus to reboot.