If your PC refuses to recognize the MXQ (even after drivers), use the SD card method.
To flash , you need specific hardware and software. Firmware Rk3128 Mxq Ep 68
A: Only if you flash the RTL8723BS version (which has Bluetooth). The RTL8188 version has no BT hardware. If your PC refuses to recognize the MXQ
This Russian forum has extensive discussion and download links for RK3128 TV boxes , including Brazilian and stock ROM variants. including Brazilian and stock ROM variants.