iPad Air 2 (Cellular)
Unsigned iPadOS

iPadOS 15.1 (19B74)

iPad Air 2 (Cellular)

iPad_64bit_TouchID_15.1_19B74_Restore.ipsw
Device
iPad Air 2 (Cellular)
Identifier
iPad5,4
OS
iPadOS
Version
15.1
Build
19B74
Release Date
2021-10-25
Upload Date
2021-10-15
Size
4.80 GB
Status
Unsigned
SHA1
e72e5e0823be8fe5f3f619f582d875f5546a11b8
SHA256
f05ca409b00f25b115202dcade69552ae930b15a0fe661e94b459aeb5a129bd0
MD5
440ff9c9811595e55b42fecd80e7809e

iPadOS 15.1 Release Notes

SharePlay

  • SharePlay is a new way to share synchronized experiences in FaceTime with content from the Apple TV app, Apple Music, Fitness+, and other supported App Store apps
  • Shared controls give everyone the ability to pause, play, rewind or fast forward
  • Smart volume automatically lowers the audio of a movie, TV show or song when your friends speak
  • Apple TV supports the option to watch the shared video on your big screen while you continue the FaceTime call on iPad
  • Screen sharing lets everyone on a FaceTime call look at photos, browse the web, or help each other out

Live Text

  • Camera app Live Text support recognizes text, phone numbers, addresses, and more so you can take action on them (iPad with A12 Bionic and later)
  • Keyboard support lets you insert text directly from the Camera into any text field (iPad with A12 Bionic and later)

Translate

  • Mandarin Chinese (Taiwan) support in the Translate app and system-wide translation

Home

  • New automation triggers based on the current reading of a HomeKit-enabled humidity, air quality, or light level sensor

Shortcuts

  • New pre-built actions let you overlay text on images or gifs, plus a new collection of games lets you pass the time with Siri

This release also fixes the following issues:

  • Photos app may incorrectly report storage is full when importing photos and videos
  • Audio playing from an app may pause when locking the screen
  • Available Wi-Fi networks may not be detected

For information on the security content of Apple software updates, please visit this website:

https://support.apple.com/kb/HT201222

How to Restore iPadOS 15.1 IPSW

🖥

iTunes (Windows / macOS Mojave and older) & Finder (macOS Catalina+)

  1. Download the iPad_64bit_TouchID_15.1_19B74_Restore.ipsw file to your computer.
  2. Connect your iPad Air 2 (Cellular) to your computer with a USB cable.
  3. Open Finder (macOS Catalina+) or iTunes (Windows / older macOS) and select your device.
  4. To Update (keeps data): hold Option (Mac) or Shift (Windows) and click Check for Update.
  5. To Restore (erases data): hold Option (Mac) or Shift (Windows) and click Restore iPhone/iPad.
  6. Navigate to and select the downloaded .ipsw file, then confirm.
  7. Wait for the process to complete — do not disconnect the device.
⚠️ Note: This firmware is no longer signed by Apple. iTunes/Finder may reject the restore. Use a tool like futurerestore if you have saved blobs.
⌨️

idevicerestore (Command Line)

An open-source command-line tool that restores IPSW files without needing iTunes. Useful for advanced users, automation, and custom restore workflows.

  1. Install via Homebrew: brew install idevicerestore
  2. Connect your device and put it into DFU mode.
  3. Run the restore command:
idevicerestore -t iPad_64bit_TouchID_15.1_19B74_Restore.ipsw
Common flags:
-eErase restore (factory reset) -uUpdate restore (keep data) -dEnable debug output -nDry-run — don't actually restore
🔓

futurerestore (Saved Blobs / Downgrade)

futurerestore allows restoring to unsigned firmware like this one when you have saved APTickets (blobs) from a tool like TSSSaver or shsh.host.

  1. Download futurerestore from github.com/futurerestore/futurerestore.
  2. Ensure you have a saved .shsh2 blob for iPadOS 15.1 (19B74) on your iPad Air 2 (Cellular).
  3. Put your device into DFU mode and run:
futurerestore -t your_blob.shsh2 --latest-sep --latest-baseband iPad_64bit_TouchID_15.1_19B74_Restore.ipsw
⛔ Warning: Using --latest-sep requires the latest SEP to be compatible with iPadOS 15.1. Always verify compatibility before restoring to avoid a bricked device.
📲

Entering DFU Mode

DFU (Device Firmware Update) mode is required for most manual restores. The button combination varies by device:

iPhone 8 / X and later / iPad with Face ID
Press & release Volume Up → press & release Volume Down → hold Side button until screen goes black → hold Side + Volume Down for 5 s → release Side but keep Volume Down for 10 s.
iPhone 7 / 7 Plus
Hold Side + Volume Down for 8 s → release Side but keep Volume Down for 10 s.
iPhone 6s and earlier / iPad with Home button
Hold Home + Sleep/Wake for 8 s → release Sleep/Wake but keep Home for 10 s.

💡 Tip: In DFU mode the screen stays completely black. If you see the Apple logo or a "Connect to iTunes" screen, you entered Recovery mode instead — try again.

⇓ Download IPSW Firmware (4.80 GB)
iPad Air 2 (Cellular)
Other Signed iPadOS Versions
1 items iPadOS 15.1 (19B74)