iOS 13.1 downgrade from iOS 13.1.2 is now no longer possible after Apple stopped signing the iOS 13.1 firmware.
Here are iOS 13.1 and iPadOS 13.1 final features, release notes and changelog according to Apple itself for iPhone and iPad users.
Here is iOS 13.1 and iPadOS 13.1 final download release time in your region time zone, complete with details.
Download iOS 13.1 IPSW Links & Install On iPhone 11, Pro, XS, Max, XR, X, 8, 7, Plus, 6s, SE, iPod [Tutorial]
You can now download iOS 13.1 final IPSW links and install on all compatible iPhones, such as 11, Pro, Pro Max, XS, XS Max, XR, X, 8, 7, Plus, 6s, and SE, as well as the iPod touch 7th-generation and even iPad (as iPadOS 13.1).
iOS 13 Fortnite and PUBG Mobile gestures bug is real. Do not update and wait for iOS 13.1 if you play these games. Here are the details.
You can now download iOS 13.1 beta 4 for iPhone 11, 11 Pro and 11 Pro Max as IPSW link or OTA profile update. Here are the details.
Here's how you can downgrade iOS 13.1 beta to iOS 13.0 final on your iPhone or iPod touch device the right way.
You can now download iOS 13.1 public beta 3 OTA Update profile as a tester of Apple Beta Software Program. Here are the details on it.
Here’s how to install iOS 13.1 beta 2 profile file download for over-the-air (OTA) update without a registered UDID or access to an active Apple developer account.
You can now download iOS 13 beta 2 IPSW links and over-the-air (OTA) update for iPhone as well as iPadOS 13.1 beta 2 for iPad. With this seed, the second beta of iOS 13.1 and iPadOS 13.1 are now available for all registered developers with compatible iPhone and iPad devices.