Can't program my device using CP2102N 28pin

[oyildirim]

Hello,

I designed a custom board using CP2102N 28Pin device and MSP430G2553. But I cannot program it. Here is the command line output:

C:\ti\msp430-gcc\examples\msp430g2553>python msptool.py -p COM20 -f msp430g2xx3_1_rd.txt
msptool v0.3
Executing: .\mspdebug\mspdebug.exe rom-bsl -d COM20 "prog msp430g2xx3_1_rd.txt"
expand_tilde: getenv: Completed successfully.
MSPDebug version 0.25 - debugging tool for MSP430 MCUs
Copyright (C) 2009-2017 Daniel Beer dlbeer@gmail.com
This is free software; see the source for copying conditions. There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Chip info database from MSP430.dll v3.15.0.1 Copyright (C) 2013 TI, Inc.

sport_open: System cannot find the file specified.
expand_tilde: getenv: Completed successfully.
Resetting...

What steps should I follow to program my MSP430?

Best regards,

Onur