If fastboot is working properly, you will see your device listed here by its serial number. If you do not see any devices listed, make sure that your device is actually in fastboot mode and that you are using a good USB cable (yes, this does make a difference).
Jul 31, 2014 · You delete the laf partition, which forces fastboot mode and takes the place of download mode. IF you want to return the phones download mode fastboot flash laf laf.img EDIT: you can skip flashing the laf.IMG back before exiting fastboot if you wanna leave fastboot mode enabled instead of download mode.