be sure to run as admin the USB burning tool  , here is the steps:

1. load the .img file
2. click the start button
3. toothpick the reset button of your box
4. put the power plug together with tootpick then you will see it will be connected
5. release the toothpick
6. wait to finish the upload of file to your box (around 2mins.)
7. press stop button and unplug the USB to your box

note: donot use your PS when using USB burning tool

regards,
kabise

If it's of any help to anyone else, I finally got the USB Burning tool to connect and the img file to load (first and only time so far). The above steps are correct, but imho I think holding the button down all the way to 'start' made a difference:

1) I pressed the reset/recovery button and held it down continually after plugging in the USB cable for power...keep holding it down...
2) Still holding the button down, I hit 'refresh' in the burning tool, at which point it saw the USB Hub and connected--still held the reset button down...
3)  I kept holding the reset button and clicked 'start', at which point it started loading, and after a few seconds I released the button and worked!

Still trying to get the box to not boot loop...but at least I was able to finally get the USB Burning Tool (v2.0.5.15) to work.