Below are the steps for entering into recovery mode and do force-update if the S2+Android OTT box is broken,please kindly check and note.
1. Rename the update file to RomUpdate.bin
2. Creat a folder named "RomUpdate" under the root directory of USB disk
3. Put the RomUpdate.bin file into the RomUpdate folder
4. Power off the machine and plug in the USB disk. Power on and press the "power" on the front panel do not loosen
untill you see "UPDATE" displayed on the fontpanel, then it will start the update automatically.
5.After update finished it will reboot automatically and bootup to normal system.