Aktualizacja firmware MSP430 przez Tx/Rx bez DTR i RTS - czy to możliwe?

Czy możliwe jest aktualizowanie firmware procesora MSP430 mając do dyspozycji tylko linie Tx i Rx? Bootstrap Loader używa jeszcze lini DTR i RTS ale ja niestety nie mam możliwości wyprowadzenia ich "na zewnątrz" budowanego użądzenia.

Ok - jest to możliwe

"Since the CPU can write to its own flash, then any data that can get into the chip can be written into flash. So, the customer can use any way of getting data into the chip as a way to update the flash. If the customer already has a UART connection to the outside world, that can be used to update the flash. The MSP430 doesn’t directly support this. The customer would have to write their own protocol for updating the flash. The customer could define a string of characters that the CPU would recognize and then go into a “program” mode where it would then take data from the UART and write it into flash. The customer would have to write that code themselves. "


http://www-k.ext.ti.com/SRVS/CGI-BIN/WEBCGI.EXE/,/?St=33,E=0000000000007953502,K=5959,Sxi=5,Case=obj(51357)