Complex sentence: If an iOS user removes PP Jailbreak from their device, they will have to update their device to the latest iOS version due to firmware updates by Apple, and a device loaded with the latest iOS version cannot go back to a previous iOS version.
Split into simpler sentences: If an iOS user removes PP Jailbreak from their device, they will have to update their device to the latest iOS version due to firmware updates by Apple. Furthermore, a device loaded with the latest iOS version cannot go back to a previous iOS version.