1.) get the last Image --> Download
2.) extract to a usb Stick
3.) only folder en2 must present on the stick
4.) Switch Power off your Box connect Stick on the back side of your box.
5.) press "VOL+" key on front of your box and switch power on from your box
6.) display show "OSUP" now press "CH+" key and update is starting
7.) your see "0000" on the display flash update in progress
dont power off this breaks your box
8.) box reboot after update automatic
9.) remove usb stick , now atv is starting