So I boot off of the Live DVD (3.7.4), and try GRC with an X310 and get
an error about the firmware version being 3, when 4 was expected.
I then use usrp_x3xx_fpga_burner to update the firmware, which after a
few minutes of updating, I still get the same error with GRC?
What am I doing wrong, is there a different firmware update required, or
is the DVD version wrong, please?