how to change(or close) TX2 system startup image?

how to change(or close) TX2 system startup image? exp: the nvidia logo image.

This has been asked before: https://devtalk.nvidia.com/default/topic/1031327/jetson-tx2/change-cboot-boot-logo-l4t-28-2-/

Disabling: https://devtalk.nvidia.com/default/topic/916373/jetson-tk1/how-to-disable-nvidias-boot-splash-logo-/

thank you best