If you’re looking to install the latest incarnation of the iPhone operating system, iOS 11.3, without resorting to a jailbreak, there’s an easy way to do it. All you need is an IPA installer and a compatible iPhone or iPad. Here’s how to do it. First, make sure you have the latest version of the IPA installer app installed on your device. (You can find it in the App Store under “Utilities.”) Once you have that installed, open it up and click on the “Install” button next to iOS 11.3. Next, connect your iPhone or iPad to your computer using a USB cable. Once it’s connected, click on the “Open” button next to the IPA installer and select your device from the list of devices that appears. Now click on the “Install” button next to iOS 11.3 and wait for the installation process to finish. Once it’s done, disconnect your device from your computer and launch iOS 11.3 on your device! ..