In every search I have done I have been shown how to set up a flash drive to update from W8 or W7 using a flash drive. I have W10 installed on three PCs (1 desktop and 2 laptops) I have updated the desktop and one laptop to the new anniversary edition. I would like to upgrade the second laptop using a flash drive since I will be in an area with no Internet connection. I have downloaded the ISO, but need an education as to how to use same. Please treat me as a newbie in any response. Thank you.