cyanyde Well that I won't know coz I don't know how the internals of the 2.0 is compared to the earlier versions. My guess would be the hardware configuration does not permit brushless mode even with a modified firmware.
well as i know brushless sensored method will not leave Brushed method,
but not with Brushless sensorless method which automaticaly switch between
3 phase wired.
so any sensored Brushless will always possible to do Brushed mode
this by understanding of it's hardware, which is controlled by the firmware.
Brushed controller is more simpler than sensored Brushless controller,
sensored Brushless will always using Brushed controller,
so brushed controller is on of the whole Sensored Brushless controller.
we could say :
On Sensored Brushless controller contain 3 Brushed Controller and some sensor reader.
No matter the 3 Brushed Controller is working on one Chip or 3 Chips,
the method remain the same.
and there is only required one thing, the software controller, and
that's is the firmware.
and what the software/firmware doing is replacing the commutator on Brushed motor, and all can be done with software.
That's why we can change the timing through software settings,
and the firmware will process to controll each phase, weather
positive or negative, and amount of open gate.
So, if the firmware controll each phase, positive or negative amount of open gate. The firmware can controll all phase tobe positive only or negative only,
or + + - or - + -
fixed polar, with variable open gate.
you named it.
So the key is the firmware.
hope this will help.