Since Apple announced iOS 12 many people have been looking to install it on their devices,thankfully installing the beta is easy and the hardest part is finding the ota profile*, once you have the profile simply install it onto the device and tap install. *Users should to be a registered developer If you are looking to install iOS 12 remember it is a Beta and so it will have bugs. If you are still looking to download and install the beta follow our guide below.
Before any attempts of downgrading are made make sure you backup your data like Photos and stuff to iCloud or locally to your PC before proceeding, note that full Backup option available in iTunes and iCloud won’t work if you try to restore a backup made from a newer firmware onto an older version.
Download the current version of iOS 12 Beta firmware profile directly on your device typing your passcode when prompted.
Wait for the profile to download and click restart when prompted
Wait for your device to restart and the software update to install
Once complete you will now have your device on iOS 12 Beta.