USBDM ARM Programmer Securing MCU and not able to Mass Erase

[Rigolon]

Hello,

I'm using the USBDM ARM Programmer to program my board that has an MK22FN1M0AVLQ12.

After programming a test firmware it gets secured and i'm not able to mass erase.

Security option is set to IMAGE.

FTFL_FSEC us 0x00, so Mass Erase should be enabled.

Is there anyway that I can erase this MCU so I can program a new firmware?

[Rigolon · Accepted solution]

Just found a way.
I forced RESET pin to GND and hold it while used the Mass Erase function of ARM Programmer.