S32K144 chip locked

[feedmt]

Hello， my chip S32K144 is locked.when i tried to erase chip by j-flash。now i can not connect the chip via S32DS or Jlink or something else. when i tried to use unlock Kinetis ,the terminal showed the info below:Unlocking device...RESET (pin 15) high, but should be low.

I m sure the debug hardware is fine,   how to unlock during this situation?

by the way, i use the bootloader to flash app，when i flashed some app,and tried to erase all flash via j flash, the chip will locked as i said。

 

[VaneB]

Hi @feedmt 

Did you enables CSE? If yes, mass erase will not work, just in the case that the key is configured as write-protected.

If you can't establish connection via JTAG/SWD anymore and there is no code in the flash that could do that, the device is bricked.

B.R.

VaneB