Regarding STM32G431MBTx board flash memory read protection.

[AWalu.3]

Good Morning,

I am using STM32 board with on board debugger. I can build the code as well as Flash the code in Flash memory but not able to read the code from flash memory.

I want to unlock the STM32 with J-link. Please guide me.

In STM32 Level 0, Level 1, Level 2 flash memory read/write protections are there.

How to check particular register value to verify level of protection.

and If it is in Level 1 how how bring back to level 0?

Please check the log messages in below attached image file(after flashing the code in flash memory).

I am not able to run the code in debug mode.

[Piranha · Accepted solution]

> I want to unlock the STM32 with J-link. Please guide me.

Apparently using the J-Link STM32 Unlock tool is hard to think of...

[AWalu.3]

Thank You!

With the help of "J-Link STM32 Unlock" utility flash memory unlock issue get solved.