How can I use USART on STM32F446RE Nucleo board to upgrade its firmware using USART bootloader through Linux?

[SSoni]

How can I upgrade the firmware of STM32F446RE Nucleo board using USART bootloader from Linux? I have successfully upgraded firmware using USB-DFU using dfu-util library that is present for Linux but I want to do the same through USART. How can I do that?

I am attaching flowchart of bootloader flowcharth for Nucleo-F446RE.

Thanks in advance

Siddharth

[SSoni]

Kindly help guys.