STM32U585:FLASH Read protection level 1 issue

[apoorvabs]

Dear Sir/Madam

We are using STM32U585AII6Q MCU part in one of our projects.

We encountered a problem with Flash read protection and no longer able to flash the MCU.

Below is the reference screenshot from the error.

We also tried few methods defined in the below document (page 56).We use Segger j-link tool (JTAG interface).

https://www.st.com/resource/en/user_manual/um2237-stm32cubeprogrammer-software-description-stmicroelectronics.pdf

Unfortunately, we are not successful, and unable to even read the Device authentication ID as well . Device authentication ID shows 0x - -.

Could you please let us know how we can set Read protection level 0.

Thank you in advance

Regards

Apoorva

[STTwo-32 · Accepted solution]

Hello @apoorvabs 

I suggest you to take a look at those two Articles:

• Isolation in STM32 microcontrollers: STM32U5 and S... - STMicroelectronics Community
• How to regress from RDP level 2 to RDP level 0 on ... - STMicroelectronics Community

and watch those two xideos:

• STM32U5 Keyed RDP - 1 Theory (youtube.com)
• STM32U5 Keyed RDP - 2 Hands-on (youtube.com)

They should help you to be back to the RDP0 state.

Best Regards.

STTwo-32

[Christian N]

This post has been escalated to the ST Online Support Team for additional assistance. We'll contact you directly.

[apoorvabs]

Hello ST team,

After watching the video's we were able to solve the issue.

We highly appreciate your support regarding this matter.

Thank you

[apoorvabs]

Hello Christian,

Thank you for looking into all the tickets so deeply. The video's were very detailed and indeed helped us to solve our problem. We are able to flash the MCU again.

 There is no need to escalate further.

We highly appreciate your support.

Best Regards,

Apoorva Gowda