OK, now it works after I remove the "-b 115200 "
Do I need to apply the calibration data since I erased everything using ST-LINK?
I went to https://developers.aceinna.com/devices/owned/2075000294 clicked "DOWNLOAD" under "Calibration Data" but got
"There is some error while generate download link. " Can you fix it? Also please let me know the instruction to apply the downloaded calibration data.