Switchable DSP tuning via V2 has been available for LB7 and LLY for around 12 months to give users the option of not hardwiring in a switch.
DSP2 and DSP5 switchable tuning for LBZ and LMM is currently only available via hardwired switch. We doubt it is possible to switch via V2 due to the limitations of the ECM. Switchable tuning for LBZ/LMM is still only available in public beta, however will be a full public release shortly.
NOTE: Switchable tuning is very different to standalone flashing - you flash your ECM with 5 tunes and then use the switch to change between them, you don't flash the ECM everytime to change your tune. Standalone flashing is still in development and we have no time frame for public release, other than it is getting closer.
Cheers
Cindy