1. Download a sifteam e2 flash version.
2. extract and rename "usb_update.img"
3. format dok fat32 and transfer file called "usb_update.img"
4. disconnect box from electrit and connect dok
5. hold "power" and
reconnect box when usb update come on let go the power. and
wait until "done" come up (After, you will see "erase" and then "flashing". At the end "DONE".
6. disconnect dok and restart the box.
Thanks to MBD