You need a Fastboot cable/adapter/etc.
You can make one yourself by soldering 4th contact/the one with the missing spot to the 1st contact (red wire/power wire).
And then you can use whatever to recover.
AND make sure you use Kindle Fire FIRST GENERATION SOFTWARE. OTHERWISE YOU WILL BRICK AGAIN, AND THEN, COMES JTAG.
HTC One S - Bricked
Pantech P2020 Ease - Current
SE K810i - Flashed to K800i
Kindle Fire 2nd Generation - Working, CM10.2