Strange characters at home screen

You were on a very old release of the firmware. Units running that and prior versions with auto-update MAJOR that didn’t upgrade were effectively frozen there due to a problem downloading firmware through a major Australian ISP. I speculate that the inactive period you mention put you in that group. I’ve restarted auto-update for that group top the latest 02_07_05 that is in use everywhere else. If your system is running at all, it should update over the next 24 hours.