IPSW Downloads

iPadOS 8.1.1 - 12B436 for iPad Air 2 (Cellular)

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

Release Date17 November 2014
Upload Date11 November 2014
File NameiPad5,4_8.1.1_12B436_Restore.ipsw
File Size1.95 GB
SHA256sum488585852733f1ced9fbe0e466075032a37b65b30fbde5f2002af2f831b8e5b6
MD5sumadbfdc62a2299ca1f8e562e101c3532d
SHA1sum0b1165cb1c11e339985f886b96b1baf249359d5e
IdentifieriPad5,4

Installation Instructions

Windows

  1. Install the latest version of iTunes from the Microsoft Store.
  2. Connect your iPad Air 2 (Cellular) to your PC.
  3. Open iTunes and navigate to your iPad Air 2 (Cellular).
  4. Hold the Shift key and click "Restore".
  5. Select the iPad5,4_8.1.1_12B436_Restore.ipsw file you downloaded.
  6. Wait for the restore to complete and for your iPad Air 2 (Cellular) to reboot.

macOS

  1. Connect your iPad Air 2 (Cellular) to your Mac.
  2. Navigate to your iPad Air 2 (Cellular) in Finder.
  3. Hold the Option or Alt key and click "Restore".
  4. Select the iPad5,4_8.1.1_12B436_Restore.ipsw file you downloaded.
  5. Wait for the restore to complete and for your iPad Air 2 (Cellular) to reboot.

Linux

  1. Install idevicerestore.
  2. Connect your iPad Air 2 (Cellular) 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 iPad5,4_8.1.1_12B436_Restore.ipsw and press Enter.
  5. Wait for the restore to complete and for your iPad Air 2 (Cellular) to reboot.