, Apple has this version. This means that while the file is available, you generally cannot install it on your device through official methods like iTunes or Finder, as Apple’s servers will reject the installation request. If you are looking to purchase an iPad Air 4 Go to product viewer dialog for this item.
: You can also find the slightly newer iPadOS 15.6.1 , which was also released in August 2022 and is similarly unsigned. Standard Installation Steps (For Signed Versions) Download iOS 15.6 for iPad Air 4 (Cellular)
While you can still download the specific firmware for your iPad Air 4 (Cellular) Go to product viewer dialog for this item. , Apple has this version
, they are currently available from retailers like Poshmark or eBay for roughly $240 to $469. : You can also find the slightly newer iPadOS 15
If you were installing a signed version of iPadOS (like the current version), the process for using an IPSW file is as follows:
How to Update to iOS 15.6 - iPad, iPad Air, iPad mini, iPad Pro