STM32N6570-DK unable to erase flash memory

[benabes]

I have just received my STM32N6570-DK and tried to flash the external memory

Whatever I do :

* program an Hex file

* erase single sector

* erase full memory 
I always have the same error : failed to erase memory

I have tried to revert cube programmer to version 2.19  but I still have the error.

The bios of the board has been updated

Any idea of what to do ?

[Imen.D]

Hello @benabes 

Maybe you have the same issue as this thread: Solved: STM32N6570-DK: Unable to erase external flash.

Check the boot mode and try setting it to "Development Boot".