how to dump the existing hex files into stm32 MCU and how

[Jack Peacock_2]

Use bootloader or JTAG/SWD port

I like this new Twitter style forum posting.

"Brevity is the soul of wit" Shakespeare, Hamlet

[AvaTar]

> I like this new Twitter style forum posting.

Keep going here, and you get some fulfilled days ... ;)

The involved Google translator might even add a funny note here and there.

[Tesla DeLorean]

Please try to better formulate your posts with a title, and a body containing the question and some context.

You can typically use an ST-LINK and the ST-LINK Utilities or STM32 Cube Programmer application to pull the current content from a device, and also to write a binary, hex, or object file to an STM32 part.

Other makes/models of JTAG pods will also work in a similar fashion. An the STM32 System Loader provides USART and USB methods, again supported by then STM32 Cube Programmer