I bought an Apple Watch series 4 and didn't realize I have to be on the latest iOS on my iPhone to sync it. I'm jailbroken on 11.3.1 and I really don't want to lose my jailbreak. My question is if I decide to go ahead and update my iPhone to 12.3.X and sync will I need to keep updating my phone when I new iOS comes out or will I be able to keep using my watch and not have to update?