I have the 8212 and this unit has no usb plug... only SD card slot.
So any changes to the software would probably have to be done using a gupdate program on an SD card.
As I said, I have software version 7.30 and I can still use VUS512L v2014.5 (V16.0) that was unlocked using gimgunlock. So it's either the new chart cards or the newest software... or a combination of the two.
Another solution would be if someone can figure out how to generate GMA and other unlock code(s) necessary and defeat/bypass MSV. But I think that it is very difficult.
Please keep us informed if a solution is found.