LG - Fastboot doesn't recognize my device I'm trying to get flash a custom recovery on my LG p760, however when I type fastboot devices in the command prompt (while booted into fastboot mode) nothing shows up. adb devices works fine though. I have installed all necessary drivers as well.

I have read that sometimes it doesn't show up but it still works to flash etc. But In my case that's not true. If I try to flash something it just says &lt;waiting for device&gt; all the time and nothing appears on my phone screen.

This is really frustrating because I have searched for a fix everywhere without success.
I had same problem and it was because of USB3 PORT. When I changed usb cable to USB2 port fast boot drivers get installed and the error gone.