IPSW Downloads

iOS 8.1 - 12B411 for iPhone 4S

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

Release Date20 October 2014
Upload Date15 October 2014
File NameiPhone4,1_8.1_12B411_Restore.ipsw
File Size1.66 GB
SHA256sume7945b6efa7b03ea78bbf0d2a13ea30b235749860479c37d50aeb4e4e81c2d63
MD5sum5b032ba7c7682627bfafae5fb43243a5
SHA1sumc5923462caa9a77a1bd3a3e56058982458ba9d25
IdentifieriPhone4,1

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 4S to your PC.
  3. Open iTunes and navigate to your iPhone 4S.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone4,1_8.1_12B411_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 4S to reboot.

macOS

  1. Connect your iPhone 4S to your Mac.
  2. Navigate to your iPhone 4S in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone4,1_8.1_12B411_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 4S to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 4S 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 iPhone4,1_8.1_12B411_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 4S to reboot.