This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CCS/CC3220S-LAUNCHXL: SLImageCreator fails to flash CC3220S after debug session with CCS

Part Number: CC3220S-LAUNCHXL
Other Parts Discussed in Thread: CC3220S, UNIFLASH

Tool/software: Code Composer Studio

Dear Community,
I'd appreciate your advise on the problem I'm experiencing:
After debugging CC3220S launch board with CCS, both Uniflash and dslite fails to program MCU at Power on step.

Config file (cfg.json) doesn't exist, using defaults
INFO:root:FTDI not detected, trying XDS
INFO:slbootloader.slbootloader:Connecting to device
INFO:slbootloader.slbootloader:Power off
INFO:slbootloader.slbootloader:Set break signal
INFO:slbootloader.slbootloader:Power on
Traceback (most recent call last):
  File "", line 3161, in 
  File "", line 3157, in main
  File "", line 3136, in cmdline
  File "", line 2511, in command_project_program
  File "", line 752, in connect_device
  File "U:\slbootloader\slbootloader.py", line 392, in connect_with_reset
  File "U:\slbootloader\slbootloader.py", line 276, in _expect_ack
  File "U:\slbootloader\slbootloader.py", line 307, in _read_data
slbootloader.slbootloader.BootLoaderError: Timeout reading data
SLImageCreator returned -1

Reconnecting the launch board to USB causes even more strange problem:
COM port cannot be found anymore, despite it is shown in the Device Manager (see log below).

Only rebooting PC gives a remedy, but this is very inconvenient

Config file (cfg.json) doesn't exist, using defaults
INFO:root:FTDI not detected, trying XDS
Traceback (most recent call last):
  File "", line 3161, in 
  File "", line 3157, in main
  File "", line 3136, in cmdline
  File "", line 2511, in command_project_program
  File "", line 746, in connect_device
  File "U:\slutils\slutils.py", line 316, in get_ex_port
  File "U:\venv_ic\lib\site-packages\serial\serialwin32.py", line 38, in __init__
  File "U:\venv_ic\lib\site-packages\serial\serialutil.py", line 282, in __init__
  File "U:\venv_ic\lib\site-packages\serial\serialwin32.py", line 66, in open
serial.serialutil.SerialException: could not open port 'COM44': WindowsError(2, 'The system cannot find the file specified.')
SLImageCreator returned -1