Rest RDP Read Protection

[As.51]

Hi, I have the STM32F427VI, I don't know how this happend but now is read/write protected Level1. How can I reset this, I want to disable read protection at all to burn my application.

Now I can't read the memory with STM Utility with J-TAG and coudn't erase memory with Demonstrator GUI via RS232. Please see the attached image.

[TDK]

Uncheck all sectors on the bottom and change Read Out Protection in the top-left to Level 0 and apply.

[As.51]

I tried this but I get the error: Could not set Option bytes!

Please see the attached picture. Thank you for your help:)

[Piranha]

Set "Connect Under Reset" and do full chip erase.

[As.51]

This is not working. Please see the images attached

[As.51]

I managed with the option bytes to remove the read only but when I conenct with JTAG I still get the message that the MCU is ready only

[As.51]

I managed to do it by removing all jumpers in the board.Thanks!