Some have noticed that the OTA update is more reliable when you are running without the root patches. I've noticed in the past that it can take multiple attempts to get an OTA to start or complete when running with the root patches. On my current setup with Sequoia and the past couple of revisions of OCLP it seems to work fairly well to just run with the root patches.A couple of you - @JedNZ and @RumorChaser - have said this past week that you backed out the root patches before going OTA to 14.7.6. What is the reasoning, is this common knowledge? I’ve never heard about it before today.
I think results also vary with the particular hardware you have.This is probably one of those things where you should use whatever method works best for you. Some people always make a USB installer and update that way to avoid the OTA updates entirely. I have used that method myself in the past when I was having issues with the OTA update. USB installer is probably the safest way to go.