This article shows you the steps on how to install the new root certificate – ISRG Root X1 – on your iPhone iOS.

1. Download the certificate from this link: http://vo.agnx.com/isrgrootx1.der

2. Click on [ Allow ].

3. Then, click on [ Close ] once the profile had been downloaded.

4. Next, go to you iPhone Settings.

5. Select Profile Downloaded.

6. Click on [ Install ] to install the profile.

7. Enter your iPhone passcode.

8.Click on [ Install ].

9. Once again, select [ Install ]

10. Lastly, once the profile had been installed, click on [ DOne ].