Use the info
@Willo3092 - this will sort your USB so it can flash a box:
http://www.techkings.org/resources/preparing-flash-drives.41/
I have had the same USB for flashing for 2.5 years and yet one day recently it stopped. Using the tool above sorted my USB and I am sorted again. You have nothing to lose as you think the box is dead anyway.
As for boxes are you looking for a twin sat tuner or single?
Twin tuner -
@cactikid what is the name of that Alpha box?
Single tuner I would go for the Zgemma H9S for it's pure speed and low cost.
Both will run your IPTV without an issue saving you having to switch to the firestick. If you want to that is.