Even if the software could be forced onto the device, the iPad 4's 1 GB of RAM and older processing power would be unable to handle the system requirements of iOS 11. How to Check Your Current Version
The short answer is that . Apple officially ended software support for the iPad 4 in 2017 because its hardware is based on an older 32-bit architecture, while iOS 11 and all subsequent versions require 64-bit hardware. ios 11 download ipad 4
The iPad 4 uses the Apple A6X chip , which is a 32-bit processor. iOS 11 was the first version of Apple's operating system to drop support for 32-bit devices entirely, moving to a strictly 64-bit environment. Even if the software could be forced onto