Next question is Jailbreak 12.3. We know that all version jailbreak tools confirmed iOS 12.2.1 version. If you have your iPhone or iPad running on such version, we recommended not updating you devices. Last version jailbreak is stable and don't have errors and bugs.
There are a large number of programs that perform jailbreak, but all of these programs have an expiration date. Under this term, we mean the version of the OS that works on your iPhone. For example: redsn0w, purplera1n, SpiritJB, Limera1n, Blackra1n, PwanageTool, Redsn0w, Sn0wbreeze Greenpois0n and JailbreakMe can make jailbreak for all old iOS version, but only Unc0ver Jailbreak can make jailbreak on iOS 12.1.2
Unfortunately, a home pages that loudly declare that they have Jailbreak iOS 12.3 download links are in fact tricksters. On such sites you will not find a link to the jailbreak, but only fake programs. If you download and install them, you will open your personal information and they will be able to download it to themselves.
You can find all confirmed iOS version and jailbreak tools here!!!