Android Devices V2 Protocol

Not aware there are any issues with transport controls with V2.
The transition back, I think you just recreate your devices in V1 and disable the V2 driver.
But I would be looking closer at your use of the V2 driver to ensure it's not something else.

Transport controls do work. Use the driver's command builder to test the transport controls while verbose logging is turned on. Post a snippet of the log so i can see it.