Running an OTA Android update if you have rooted your phone with Magisk
Seeing Oreo 8.1 is about to be released OTA these will be useful instructions for those who have rooted their phones using Magisk. Make sure you have disabled auto OTA updates and have run a full Titanium Backup. The Pixel series of phones is by far the easiest to do this.
Source: Running an OTA Android update if you have rooted your phone with Magisk