No, this will not run because the new interfaces of FDT2.0 are not supported by a 1.2.x Frame Application. In this case you have two possibilities. Either your device vendor has to deliver a FDT 1.2.x DTM or your Frame Application provider has to update the Frame Application to a FDT2.0 based version. An FDT2.0 based Frame Application together with a FDT2.0 DTM will bring you the benefits of the FDT2.0 technology. An FDT2.0 Frame Application is able to integrate both FDT 1.2.x DTMs and FDT2.0 DTMs.