Jetpack 3.1 on Nvidia TX1 has an error

Hi

 When I download Jetpack 3.1 on ubuntu 14.04 which install in virtualbox, and when I install components(Jetpack 3.1) on the specific target machine, it has a error:

Error : Return value 8
Command tegrarcm --download bct P2180_A00_LP4_DSC_204Mhz.bct
Failed flashing t210ref

so what`s wrong?It has an error because host does not connect usb/type B to tx1 correctly?

VMs are known to be a pain to get the micro-B USB working. Here’s a URL with VM info:
https://devtalk.nvidia.com/default/topic/1002081/jetson-tx2/jetpack-3-0-install-with-a-vm/