I discovered it was my mistake, when I am using the mobile while charging it destroyed the cable and the connector... That's why it's better to be careful and to avoid this kind of problems.
I purchased the bv6000 pre order from AliExpress way back then and I also still have mine and it is still working very well. I had some issues along the way but for the most part it was worth it and I'm still loving the device, and I got a few different devices since then including the Samsung Gala...