Apple is finally rolling out the iOS 12.1.3 update for all iOS 12 supported iPhone and iPad devices. The update is sized 300 MB and comes with build 16D40 for iPhone XS, XS Max, and XR. And build 16D39 for iPhone X, 8/8 Plus, and all previous iPhone models.

Apple hasn’t released the full changelog for iOS 12.1.3 yet but the little information shown in the update notification says “iOS 12.1.3 includes bug fixes for your iPhone and iPad”.

You can download iOS 12.1.3 OTA on your iPhone by going to Settings » General » Software Update page. If your device doesn’t detect the OTA update, wait for a few hours and check again. Restarting your iPhone might also force the OTA update.

If you’re someone like us, your way of installing iOS update is probably via IPSW firmware files and iTunes. It is the quickest way to install iOS updates, and most importantly, the best method to avoid installation issues.

Download iOS 12.1.3 IPSW Firmware

iPhone modelsiOS versionDownload link
iPhone XS MaxiOS 12.1.3 (16D40)Download
iPhone XSiOS 12.1.3 (16D40)Download
iPhone XRiOS 12.1.3 (16D40)Download
iPhone XiOS 12.1.3 (16D39)Download
iPhone 8iOS 12.1.3 (16D39)Download
iPhone 8 PlusiOS 12.1.3 (16D39)Download
iPhone 7iOS 12.1.3 (16D39)Download
iPhone 7 Plus
iOS 12.1.3 (16D39)Download
iPhone SEiOS 12.1.3 (16D39)Download
iPhone 6siOS 12.1.3 (16D39)Download
iPhone 6s PlusiOS 12.1.3 (16D39)Download
iPhone 6iOS 12.1.3 (16D39)Download
iPhone 6 PlusiOS 12.1.3 (16D39)Download
iPhone 5siOS 12.1.3 (16D39)Download

For help installing iOS 12.1.3 through IPSW firmware file, follow our step-by-step guide at the link below:

→ How to install iOS IPSW firmware file using iTunes on Windows and Mac