Bricked FK2 - fastboot devices turns up nothing
So I've got a bricked Kindle Fire 2. It was rooted and running perfectly previously, but then I decided to update to the newest Amazon update 10.4.6. I followed their instructions on doing it instead of flashing, and it got stuck in bootloop. Yay.
I've got a fastboot cable. When I plug it in, my Kindle displays fastboot as expected. I have one with the blinking green light, and solid red light.
When I try to enter any fastboot commands, nothing happens. For example, "./fastboot -i0x 1949 devices" (I'm on a Mac) gets nothing.
On my PC at work, it was recognized as a Kindle in Device Manager. I'm on a Mac at home (no PC) and not sure how to ensure if it's recognized or not. Running adb devices returns nothing as well.
Any bright ideas?
I had a space in there that I shouldn't have. So "./fastboot -i0x1949 devices" returns the device number, but trying to flash an img does nothing. I have to cancel the entry.
Okay, NOW any bright ideas?