With the release of the first beta version of iOS 10.3.2 Apple dropping support for 32-bit devices, according to an official company site for developers. In the list of IPSW files firmwares are missing models such as the iPhone 5 and fourth generation iPad.
On the Apple website in the section for iOS downloads 10.3.2 beta 1 shows only the 64-bit model. Although the company has made no official statements, refusal to test the upgrade on 32-bit devices confirm the decision to discontinue support for older processor architecture.
Recall, iPhone 5, iPhone 5c and iPad 4 are equipped with a processor Apple A6 32-bit chip companies. In 2013, the manufacturer introduced the iPhone 5s, which is the first in the industry received 64-bit processor. A year after its release, Apple has announced new rules for the App Store, according to which all applications must be translated into 64-bit architecture.
Last year, Apple started to warn users that installing 32-bit programs can adversely affect the operation of the system. In the latest update of iOS 10.3 while trying to run the app without 64-bit support, a message appears stating that it will not work in future versions of iOS.
It is unknown whether Apple will refuse to fully support 32-bit devices with the release of iOS 10.3.2, as long as the update is in the testing phase. Maybe it will happen after the announcement of the new iOS operating system at WWDC 11 2017.