why i am getting DISABLED Read out protection error? I didnt changed anything.I can not reprogram my stm32f207 custom board .How to resolve thisissue?

[TVARS.1]

[TDK]

The warning messages says it can't read memory because RDP is enabled. Disabling RDP can be done within the option bytes (Target -> Option Bytes). Set it to level 0 and restart.

[TVARS.1]

hello, thanks TDK ,for your time and reply. I tried doing it with stm utility but I am unable to modify it.it shows same warning again. Any help would be great.

[Imen.D]

Hello @TVARS.1​ ,

Welcome to the STM32 Community :smiling_face_with_smiling_eyes:.

I checked from my side and I have no problem, it works for me.

It's strange that you have the Flash size: Unknown !

As you see in the below screenshot, the flash size is 1MBytes.

So, please check that you have the correct dev ID, rev ID, flash size from the reference manual.

Imen