TDA4VM: Questions about security boot customer key burn into eFuse.

HI TI Expert,

in following link:

https://software-dl.ti.com/jacinto7/esd/processor-sdk-rtos-jacinto7/08_00_00_12/exports/docs/pdk_jacinto_08_00_00_37/docs/userguide/jacinto/modules/keywriter.html#id12

said: "This action is irreversible, so there is no going back once the keys are burned into SoC eFuses."

Question:

if during burning，but not finished yet, TDA4 battery off,the key not totally burnned into eFuse. example:part  burnned into,part not.

generally,as following picture.

1).Whart happen if battery off duirng eFuse burning.

2).then,the HS device can not be used any way?