Apple just last week released iOS & iPadOS 14.4 to the general public with new features, bug fixes, and niche improvements, and as you might come to expect from the Cupertino-based tech company after having released a software update, the previous iOS & iPadOS 14.3 firmware is no longer being signed.
Apple closed the iOS & iPadOS 14.3 signing window just this evening, a move on the company’s behalf that prevents iPhone, iPad, and iPod touch users from being able to downgrade their handset’s firmware from the newer iOS & iPadOS 14.4 release. This should come as no surprise to anyone, as Apple generally follows this rhythm of signing and un-signing after each software update it launches, no matter how large or how small.