I first click on download, and then connect the BV7000, the process starts and ends regularly. I recommend changing USB port, possibly also changing PCs. Using Flash Tools 5.1720.00, I hope to help you.
Hi, I upgraded today 2 BV7000 Pro devices to Nougat. Using windows 7 64bit PC, installation was straight forward. The only issue I had is that it won't identify BV7000 Pro with firmware from 24 March. Only after I upgraded to April 11th version, SP Flash tool identified it in Download mode. Nougat feels much better and faster. Thanks