Obtaining Android apps outside of the Google Play Store can be a mixed bag. While Android offers the flexibility to install most apps, you must be cautious about where you get these files.
How-To Geek on MSN
How to roll back to an older version of an Android app
It's easier than you think and you don't even have to lose your app data in the downgrade.
Android System Intelligence, Google Partner Setup, and Settings Services no longer face this issue due to Settings app > ...
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