STM32l432KC can not work after changing RDP level from 1 to 0 although chip was re-flashed new code successfully.

[cuongnv]

Dear everybody,

I have a STM32L432KC chip.

Firstly, I flash code and set RDP level 1 and PCROP_RDP flag to 1. => everything works fine.

Then, i want to reflash code, so I changed RDP level 0 to 1 -> Chip mass erase and flash code again. But chip seems not working anymore although code was flash successfully.

Anybody knows problems? please help me.

As I guess, reason is probably PCROP areas was reset so code can not execute.Do my guess is right ? if right, how to restore PCROP area ?

[cuongnv]

No one know?