Blackview Crown unable to remove a privacy Lock

I received today a Blackview Crown phone like below in the picture.

I lost almost all the day trying to remove that Privacy Lock by flashing it and Factory Reset and all other reset options in software. I put it aside as non repairable. :rolleyes::rolleyes:

Then now after I have a relax, I think myself why not trying the Big free SP flash tool which should be killed why it is alive.

Look what happened after I check Format All + Download in the software with the same set of flashfile that I tried all the day using CM – that Privacy Lock removed