@kota @PINE64 Hi! I recommend getting the ST-Link v2 clone: https://www.aliexpress.com/wholesale?catId=0&initiative_id=SB_20180924134644&SearchText=st-link+v2&switch_new_app=y
Check the PineTime Wiki for the flashing instructions for ST-Link: https://wiki.pine64.org/index.php/PineTime
@lupyuen @PINE64 okay, thank you very much for your quick response.