Yeah, I have tried all of the combinations of buttons to be held, none worked. Closest I got was the BLU logo flashed for a second or two, one time.
I do not mind getting a new phone but it is just frustrating that I have not had any major issues until the update to "Marshmallow".
Actually, since I bought Life X One 1 1/2 years ago and was so impressed by the value, I have purchased five BLU phones since for family and a friend, the latest was two Life One X2 Mini's which are great phones so far by the way.
Anyway, I have emailed BLU and explained what happened and I guess I am sending it to them.
Thanks