I've updated my MyGica ATV495Max yesterday. Booted fine, but got stuck when Preparing the remote. The instructions on the screen says: "Press Left and Home buttons and wait for beep" The beep never came! So I was staring at the screen for a few minutes. On the original setup for MyGica, the key combination to detect the remote is OK and Back. That worked and the system started.   What I've found: I used to have ES File Explorer on the device before - It is now no longer