You can't 'drag" from Dropbox. That will only give you another link to the file.
You have to click on "Download" then "Direct Download" or you can save to your dropbox
As previously pointed out Rock you need to do a better job at marking the latest upgrades to firmware!
There are four file folders none of which are explained unless you read through this forum which is time consuming. This request is logical and requested. Thank you!