You can download the compatible iPSW file for iPhone from below links. After downloading the file, follow installation instructions. iOS 12.1 Beta 4 is available to download now. Get the ipsw file compatible with your phone from below links.

For iPhoneI

For iPad

For iPod

iOS 12.1 Beta 4 Over the Air (OTA) Profile, No PC

If you want to install iOS 12.1 Beta 4 without PC then you can download beta OTA configuration profile of iOS 12.1 Beta 4.

First of All download the iOS 12.1 Beta 4 ipsw firmware file from above links. Connect your iPhone, iPad or iPod to the PC or Mac. Launch iTunes. Make sure to backup your data before installing the beta update. Now, if you are on Windows PC, hold “Shift” button and click on “Update”. If you are on Mac, hold “Option” button and click on “Update”. After clicking on Update, navigate to iOS 12.1 beta 4 ipsw file that you just downloaded and select it. The firmware will now start installing on your phone. When done, your phone will restart and you can disconnect from PC. iOS 12.1 Beta 4 is now running on your phone.

By doing above steps you have installed the latest iOS beta firmware on your iPad.

On your iPhone, tap on the above button. Download the OTA Profile. Reboot your phone. Then go to Settings»General»Updates. There you will have iOS 12.1 Beta 4 update received and ready to be downloaded. Download the update and it will automatically install on your phone.

That’s all for now. If you are having any problems while installing iOS 12.1 Beta 4 iPSW for iPhone, iPad, iPod then drop down comments. Share it and follow us on Twitter and Facebook.