Shehab Hassan

> You have to enable USB CDC and use the com port created. Okay Like this one Here : But still gave me the same error as i provided in...

> you have to flash it first, then select the new com port created. i have received the same issue after select the CDC what i am missundersting here ?...

> you have to flash it first, then select the new com port created. could you please clarify your suggestion because i am still confused and struggled at the position...

> As stated here: https://github.com/stm32duino/Arduino_Core_STM32/wiki/Upload-methods#maple-dfu-bootloader > > Warning > > USB CDC have to be enable else you will not be able to upload automatically as bootloader reset sequence are...