https://wccftech.com/downgrade-ios-13-2-2-to-ios-13-2-thats-no-longer-possible-heres-why/

Want to downgrade iOS 13.2.2 to iOS 13.2? You can no longer do that on iPhone or iPad as Apple is no longer signing iOS 13.2.

iOS 13.2, compared to previous iOS 13.x releases, is somewhat of a big upgrade. You get support for Deep Fusion on the new iPhones, and with that, a bunch of bugs as well just to keep everyone on their toes. Thankfully, Apple was super swift to release iOS 13.2.2 that addresses a number of issues including a fix for a notorious bug that rapidly shuts down background processes in short bursts. But needless to say, whenever a new software release crops up from Apple's end, there are going to be some problems that might or might not affect everyone. So, if you ran into something that made you think 'I better downgrade iOS 13.2 to iOS 13.2.2' then we have some bad news for you today.