SP Flash Tool 4008 Error How to use please help me :( NOT MY PHONE!

Hello,
How to fix 4008 error. Android OS and recovery deleted. But computer dedected. And "download flash 0 %" does not install. Please help me ! I am not the owner of the phone. Phone model/mark : Bluboo X6 Model LTE 4G B6 . :crying: :crying::crying: