Img file Update steps
Install the driver to your computer at first.
1,Open the android tool(Download AndroidTool_Release_v2.35.zip),
2,when you get below image, pls chose “upgrade Firmware”,
3,then click“Firmware” to add the “update.img file”.
4,When the firmware upload finished, pls connect the box with computer use OTG cable,
5, Press “recovery” button without moving, at the same time, insert the adapter, when its change to “Found a loader device”, release the recovery button.
6, click Upgrade till its finish