iPad Air model A1474

What are you attempting to download - and from where?

The first generation iPad Air, iPad mini2 and mini3 can only be updated to iOS 12.5.7. iPadOS 16/17 are current.

Apple ended major update support for these models of iPad in September 2019 - although they continue to receive occasional “point” security updates, the most recent being released January 2023. These devices cannot be updated to iPadOS 13 (or any later major versions of iPadOS) as the internal hardware does not meet the minimum technical requirements (CPU capabilities and available RAM) for newer versions of iOS/iPadOS.

Be aware that your older model iPad may have difficulty accessing may online resources and services - principally because it cannot meet the mandated security requirements of many websites and services.

What won't it download exactly?

What happens when you try?

Do you get an error? If so, what does it say?

Provide details and context about your issue, and someone may be able yo advise.

The A1474 model number corresponds to an original First Generation iPad Air. iOS 12.5.7 is as far as it can update.