Apple recently launched iOS 12.1.3 for iPhone & iPad that contained some new changes. All changes and fixes can be found here. However, if you want to downgrade to iOS 12.1.2 without losing data then here is a guide for you.
Here’s how to downgrade iOS 12.1.3 to iOS 12.1.2 on your iPhone/iPad using iTunes via IPSW file without losing any data.
Reason to Downgrade from iOS 12.1.3 to iOS 12.1.2
There may be a lot of reason for downgrading your iPhone & iPad to iOS 12.1.2. Maybe you are finding some issues with the latest iOS or maybe you want to have your iOS device Jailbroken. Generally, the Jailbreak is released for the lowest version of iOS as possible. If you are a fan of jailbreak it’s never too late to downgrade it. You can easily downgrade your iPhone right now from iOS 12.1.3 to iOS 12.1.1 and wait for a jailbreak release.
How to downgrade iOS 12.1.3 to iOS 12.1.2
Since Apple is still signing the iOS 12.1.2 and iOS 12.1.1, the downgrading to a lower version is possible. So, follow this guide to downgrade on iPhone/iPad right now before Apple stops it.
First of all, you need to download the iOS 12.1.2 or iOS 12.1.1 firmware file for your device from ipsw.me.
Step 1# Upgrade or download iTunes to the latest version on your Mac or PC.
Step 2# Now Turn off Find my iPhone & disable passcode lock via the Settings app. (Settings > Account Icon > iCloud > Find my iPhone).
Step 3# Launch iTunes & connect your iPhone, iPad & iPod Touch using a Lightning USB cable to your computer.
Step 4# Hold the Alt/Option key on the Mac or Shift Key in Windows on your keyboard and click Check for Update option.
Note: IF YOU WANT TO FRESH INSTALL THEN GO WITH RESTORE OTHERWISE UPDATE IT.
Step 5# Now Select the signed ipsw iOS 12.1.2 or iOS 12.1.1 file you had downloaded earlier
Step 6# iTunes will inform that it will Update your iPhone to the iOS you have selected
Step 7# Then click on the Update.
After that, your device will reboot to the Home screen and you will see iOS 12.1.2 installed on your device.