Apple has now closed the iOS 13.2 downgrade channel

Last week, apple released iOS 13.2.2, which fixes a number of bugs, including issues that cause unexpected exits of background apps. A week later, today, the iOS 13.2 code signature stopped, and users who have upgraded will no longer be able to download iOS 13.2 from apple’s servers.

IOS 13.2.2 includes bug fixes and improvements for iPhone:
Fixed problems that may cause unexpected exit of App running in the background;
Fixed an issue where the iPhone could temporarily lose cellular service after a call;
Solve the problem that cellular data may be temporarily unavailable;
Fixed an issue that made S/MIME encrypted E-mail responses between Exchange accounts unreadable;
Resolved a problem that might prompt authentication when using Kerberos single sign-on service in Safari browser;
Solve the problem that YubiKey accessories powered by the lightning interface may have a charging interruption;
Apple shut down the iOS 13.2 downgrade in time because there were too many system problems with the official version, as well as a known “checkm8” bug that made jailbreaking possible for iPhones, including the iPhone X.
Earlier this week, apple just released the second beta of iOS 13.3 with some minor tweaks and fixes, most notably support for NFC, USB, and Lightning security keys in Safari.

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