Join Date:Joined: Nov 2013
OTA updates often modify existing pre-installed apps, otherwise known as bloatware, so they check to be sure those targets are present and unmodified. If you have rooted but not deleted or removed or frozen any such apps, your system will pass that OTA test.
Some OTA's also look for su being installed, and hiding su can fool that, depending...
Sometimes the OTA is just mean altogether, for your protection.
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