There is a known issue with improper flashing of programs on CC13xx/CC26xx devices when using CCSv6.2.0 Build 48 (6.2.0.00048). If you are using build 48, please see the thread mentioned below for more details and for a workaround:
https://e2e.ti.com/support/development_tools/code_composer_studio/f/81/p/540519/1972312#1972312
CCSv6.2.0 build 50 has now been posted (6.2.0.00050). This includes a fix for the flashing issue exhibited by build 48 and no workaround is needed.
Thanks!
ki