How to download security bit into MCU via MCUXPresso GUI tool

[kehanqin-b46569]

Hi Experts

IDE: MCUXpressoIDE_10.3.1_2233

HW: FRDM-KE15

I found that the security bit couldn't be download into kineits via the flash GUI tool, below are my configurations and relate setting, please help to point out what I missed:

I built and created the corresponding hex file and checked it in J-flash, confirmed the security bit at 0x40C had been changed:

What's more, I will read back the value of 0x40C in main function, the security bit will have been successful changed if I use J-flash lite&hex file:

Back to MCUXpresso GUI tool, it made the 0x40C value back to FE（reset value）, so I think there should have some extra configurations need to be done in MCUXpresso, please help it, thanks a lot.

Best Regards

Kehan

[FelipeGarcia]

Hello Kehan,

The GUI Flash Tool selects the MKE15Z256XXX7 device, not the MKE15Z256XXX7 (ALLOW SECURITY) as you did in the J-Flash, that is the reason you do not see the change in the flash security bit when you use the GUI Flash Tool.

My recommendation is to use J-link, select the appropriate MCU (allow security) and program the device using the loadfile command.

Best regards,

Felipe

[kehanqin-b46569]

Hello Felipe

Thank you for your reply，yes，I noticed that, do you know where can I set the "allow security" function of the GUI tool? 

Best Regards

Kehan

[FelipeGarcia]

Hi Kehan,

Unfortunately, that is not possible for the GUI tool. You can change the MCU of the launch file if you flash your device using MCUXpresso Debugger or in the J-Link commander if you select the allow security chip.

Best regards,

Felipe