I updated the latest patch just today. But it stops loading any data after updating while the Wi-Fi connection is still fine. It works again after restart but the problem comes 10 minutes after every restarts. Any clue? How to roll back to the previous firmware version? Thanks!
The patches says to update the following.
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680 MB
Security Patch Level Update (Feb 2022)
WPA3 Support Patches Update
HBO Max Button Fix
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Chances are there is no rolling back. Most Android TV devices don't allow it. A factory reset might help though so that is probably worth a try.