MSPM0G3507: How to use the uniflash tool to burn boot.Hex and app.Hex files into MCU？

since the hex file has the address information. Next thing is to make sure the second erase-program will not erase the original code.

There are 2 methods:

1. Add static protection to the FLASH area of your first code. You can implement it by configuring the nonmain FLASH. 
2. Use Erase by range 
   1. 

That is good！