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MSPM0G3507: How to correctly flash MSPM0 by bsl_GUI

Part Number: MSPM0G3507
Other Parts Discussed in Thread: UNIFLASH

Hi TI,

I want to use bsl_GUI to flash MSPM0G3507,I tried below method, 

Factory Reset  

TI original bootloader

bsl_uart_flash_interface_LP_MSPM0G3507_nortos_ticlang

original App

LP_MSPM0G3507_PB27_Toggle_demo_app.txt

OK(case1)

Ok (case 3)

My App

OK(case2)

NG (case 4)

for case 1 , case 2 and case 3 is work , but case 4 is NG

This is MSPM0 bootloader GUI  log (case 4)

This GUI is developed with Python version: 3.10.4
Find MSP COM port:COM11
Configure UART: 9600 baudrate, 8 data bits (LSB first), no parity, and 1 stop bit.
MSPM0 is in BSL mode.
Get device ID...
Send the password...
Send package successfully!
Operation success!
Mass erase...
Send the firmware...
Send package successfully!
Operation success!
Send package successfully!
Operation success!

......

.....

Send package successfully!
Operation success!
Send package successfully!
Error: Unknow else error!
Send firmware successfully!
Boot reset the device to start application ...
-----------Download finished!----------