I am 99.99% confident that the problem occurs because if there is a corruption of the app, it attemps to go online to restore from the latest available update. If not available online, it restores from the app installed on the unit, but does not restore the user data. Most receivers restore from a local file including user data during a reboot.
Currently providing some development advice on another set top box that was designed to update / restore from online data. Now it has been coded so the firmware and user data will be restored from a local file rather than online.
So, people with A3's could just disconnect the network cable (but the clock...), OR, find out what port it uses to go out on, and block it in the network router for now...