2022-01-06 04:03 AM
2022-01-06 04:19 AM
The USB DFU boot mode is bound to a few requirements which you can read in the following application notes:
Please check all requirements for your specific device, such as pins BOOT0 and BOOT1 if applicable, bootloader activation pattern, clock frequency incl. accuracy etc.
Regards
/Peter
2022-01-06 04:19 AM
Maybe you need explain how you connect and what.
USB mode is for system bootloader connection to MCU USB and activated bootloader.
When you use STLink need other setup.
2022-01-06 11:24 PM
2022-01-06 11:25 PM