unable to update Options bytes

[Reema O]

Posted on October 27, 2017 at 23:32

Hi All, 

I am trying reprogram my board- MCU-STM32F405RGT6, programmer/debugger: ST-Link/V2. It says read protection activated (when I check my options byte REAd protection is set to level 1 ). I try to change the read protection to level 0 it says: Option bytes cannot be set Reset target device

[Vangelis Fortounas]

Posted on October 28, 2017 at 22:30

Hello!

Are you use the latest FW version of STLink v2 debuger   and stlink utility?

i tried with  F429ZI and had success.

regards

vf

[Reema O]

Posted on October 29, 2017 at 17:59

FW version of STLink V2 dedugger and utilty is 

Is F429ZI is different that this

[Vangelis Fortounas]

Posted on October 29, 2017 at 23:42

Hello again.

After some search here, i found a board with same die like yours. Here are the results.

STLink utility is the latest version as yours also.

my firmware of stlink device is

Used theese settings.

I didn't use hardware reset.

Regards

vf

[Reema O]

Posted on October 30, 2017 at 16:26

It still does not work. My Target voltage is 3.2V, is their a way to change it?

[Vangelis Fortounas]

Posted on October 30, 2017 at 17:42

Firmware V2J23S4 is too old . Suggest to upgrade.

[Tesla DeLorean]

Posted on October 30, 2017 at 21:00

More likely something else bollixed up with the design.

Connectivity issues.

NRST driven by a push-pull driver.

Voltages on VCAP pins.

Device orientation.

[Reema O]

Posted on October 30, 2017 at 20:17

Even after upgrading firmware version problem still exist

How is that for your device Target voltage is 2.9V. Does this has anything to do with read protection?

Is there any need to set BOR Level?

[Reema O]

Posted on October 30, 2017 at 21:55

VCAP_1 and VCAP_2 is 1.18 V

[Reema O]

Posted on January 22, 2018 at 19:22

Solved