launchpad & Msp430FG437

No. LaunchPad is only programs supporting Spy-Bi-Wire(seralized JTAG) devices. e.g : G series Value line devices and some 5x devices.

FG437 is has support JTAG.

This is FG437's block diagram. It supports only JTAG protocol.

In theory, you could create some not too complex hardware that translates SBW into JTAG and back. After all, SBW is a serialized JTAG (three phases with alternating input and output instead of one with parallel I/O). But buying a 'real' FET would surely be less hassle. And perhaps not more expensive too.

well thanks for the answer, i think i´ll follow your idea of getting a real FET instead trying to translate the SBW to JTAG. But by the way, i didn´t know the relation between the two protocols, its interesting to get some new information