Don't Install iOS 12.3.1 If You're Jailbroken
If you want to jailbreak your device, avoid the iOS 12.3.2/iOS 12.3.1 updates for now.
Jailbreak developers have released working iOS 12 jailbreaks for older versions of the operating system, but they haven't released anything for iOS 12.1.3, iOS 12.1.4, iOS 12.2, iOS 12.3, iOS 12.3.1, or iOS 12.3.2.
Unfortunately, there's no way to downgrade to any of the older versions of iOS 12 that work with these iOS 12 jailbreak tools.
At this point, we aren't expecting an iOS 12.3.2/iOS 12.3.1 jailbreaks anytime soon, but do keep an eye out for new developments as we push deeper into the year.