V811 Dual Core Firmware: only support V1~V5 version
Download:
http://pan.baidu.com/share/link?shareid=4145022454&uk=389436537

V811 Dual Core Firmware: only support V6 version
Download:
http://pan.baidu.com/share/link?shareid=4154320749&uk=389436537


V801 Dual Core V4.2.2D Firmware: only support V1~V6 version
Download:
http://pan.baidu.com/share/link?shareid=4134402355&uk=389436537

V801 Dual Core V4.2.2H Firmware: only support V4b version
Download:
http://pan.baidu.com/share/link?shareid=170995014&uk=389436537


VI40 Dual Core V4.2.2D Firmware: only support V1~V2 version
Download:
http://pan.baidu.com/share/link?shareid=4105506690&uk=389436537

VI40 Dual Core V4.2.2H Firmware: only support V3A V4A version
Download:
http://pan.baidu.com/share/link?shareid=4110960496&uk=389436537


VI30 Dual Core V4.2.2H Firmware: only support V3A version
Download:
http://pan.baidu.com/share/link?shareid=4009538916&uk=389436537

VI30 Dual Core V4.2.2D Firmware: only support V1~V2 version
Download:
http://pan.baidu.com/share/link?shareid=2486674113&uk=389436537