These pins are used to code and boot an Arduino from an external source. These pins allow inter workings of two or more Arduino boards and also allow you to upload your firmware. The ICSP pins act as an AVR programmer which is used to code or boot the Arduino. It mostly works at ATme...
I doubt you'll get it working in time. the serial JTAG SBW protocol isn't supported by any 'generic' JTAG interface, so you simply cannot program many of the MSPs which do not have standard JTAG pins.And even for those where the ICSP will connect, the only thing that will probably ...