Apple iPad Air 4 (Cellular) iPadOS 15.1 firmware
Apple iPad Air 4 (Cellular)
Not signed
iPadOS 15.1
Build 19B74 For iPad13,2, J308AP
Global · IPSW
A newer version is available for this region: iPadOS 27.2 beta 4
Apple no longer signs this version, so a normal restore with Finder or iTunes will fail. Use a signed version unless you know you need this one.
Download
5.43 GB
Downloads from updates.cdn-apple.com.
File details
- OS
- iPadOS 15.1
- Region
- Global
- Type
- IPSW
- Released
- Size
- 5.43 GB
- File name
iPad_Fall_2020_15.1_19B74_Restore.ipsw- MD5
82ad63193f00305dd5e8846ef3df19f8- SHA-1
c37839c73b65ddb3fb04c52aad6b14372d5142b8- SHA-256
bcde0dba775219f183ee17e2179e6a61a8737a4e0c7b88bea7853a698774d9e1
After downloading, compare the checksum with the one above. If they differ, the file is incomplete — download it again.
Before you download
- Make sure your device’s model number is one of: iPad13,2, J308AP. You will find it in Settings → About phone, or on the box.
- This file is for the Global region. Installing another region’s firmware can remove features or block updates.
- Apple devices can only restore versions marked “Signed”.
- Back up your photos, contacts and files first, and charge the battery above 50%.
How to install
Use Finder on a Mac or the Apple Devices app / iTunes on Windows to install an IPSW file. Apple only accepts versions it is still signing, so check the “Signed” label before you download.
Read the guide: How to restore an iPhone, iPad or iPod with an IPSW file