it says "user authentication failure"
"press the menu key to enter the system settings page and on the XX page try to restore the factory settings"
=> from what i gather, you should try to boot into recovery (by replugging the box while pressing the home and option button on the remote), and select to restore to factory settings.
The background is I got this box (Mi box 2) from Hong Kong feww weeks ago and it was working fine for one week, I could watch many channels including the CCTV in real time. I decided to return the settings by run a factory reset (don't ask me why). After factory reset, I realised the original apps (like VST and others) are all gone; what's left is iCNTV apps butwithout the usual VST apps.
I did another firmware upgrade (took 3 hours). After the firmware upgrade, I could only see the iCNTV menu but I can't play any of the TV or movies (with message something like unable to connect to iCNTV server.)
Attempt to roll back the firmware upgrade failed to resolved the issue; now my screen is stuck in this blue screen as reported by Ernie.
It looks like some internal or identify settings were wiped out and caused this issue.
Yes, I notice there is another thread about the iCNTV not connected, it doesn't look good in terms of the resolution.
With the apps, I have to admit I didn't make any backup. I normally did. The missing of APPs is not as a big issue compared to the connection issue. It looks if I can't get iCNTV working (or connected), this box is useless.
Not sure whether it is possible to run another application to replace iCNTV as the main application. May be I have to send back the box to Hong Kong to have it rebuilt.
I don't know how there is an option (suicide one) within the box which will get the box into such a state. I have done few times in returning mobile phones (android) to factory setting and they won't affect the functioning of the phones after the reset. The designer of Xiaomi tv box must have a different meaning of factory reset.