i use st-link v2 to dump code in stm32f103c8t6 blue-pill on that time it show the error message like its not genuine ST device please abort the connection But it read the memory size of the board (image.2)

[NO_ONE]

[Tesla DeLorean]

Not sure Image 2 shows it reading any memory.

Lot of fake chips used on these boards, GigiDevices be one such entity.

A Keil uLink would probably work, ST's tools look for counterfeit devices.

[LStef.1]

Hey, did u find a solution to the not genuine ST device ??? If u did mind helping me out ?

[Tesla DeLorean]

Use tools and MCU settings appropriate for the device you have on the board, or get some boards with authentic STM32 parts on them. Not much we can do from here...