IPSW Downloads

iOS 11.2.1 - 15C153 for iPhone 8 Plus

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

Release Date13 December 2017
Upload Date10 December 2017
File NameiPhone_5.5_P3_11.0_11.2.1_15C153_Restore.ipsw
File Size2.75 GB
SHA256sumdbcf24889a0fd1263acbac45794a2ce41bda4964b73d6d987778e57c7e16e074
MD5sum558b63c89cf43e130d8aac6c33489f55
SHA1sum9227b1fa07cd17456f435a51dcff3dccb8238a67
IdentifieriPhone10,5

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPhone 8 Plus to your PC.
  3. Open iTunes and navigate to your iPhone 8 Plus.
  4. Hold the Shift key and click "Restore".
  5. Select the iPhone_5.5_P3_11.0_11.2.1_15C153_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPhone 8 Plus to reboot.

macOS

  1. Connect your iPhone 8 Plus to your Mac.
  2. Navigate to your iPhone 8 Plus in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPhone_5.5_P3_11.0_11.2.1_15C153_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPhone 8 Plus to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPhone 8 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_P3_11.0_11.2.1_15C153_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPhone 8 Plus to reboot.