I am using a MacBook (OS 10.6.8) with fastboot installed. It works when I use it with a Kindle Fire. I have not one, but three, factory cables, all of which (1) work with the Kindle Fire and (2) seem to work with my two broken-touchscreen a855 droids. I'm pretty sure that I've been able to get the droids into fastboot mode with the factory cable (and, in one case, without it) since (a) the info shown for the droids by System Profiler on the MacBook is very different when I boot with the factory cable (or boot holding down the volume down button) than what it is when I boot normally and connect with a normal cable and (b) I can boot with the factory cable without the battery installed. But when I run fastboot the way I successfully run it to access the Kindle Fire, it doesn't recognize that the Droid is there. I've tried: Code: fastboot devices fastboot -i 0x22b8 reboot fastboot -i 0x22b8 reboot-bootloader fastboot -i 0x22b8 getvar product and all of the last three without '-i 0x22b'. It hangs either with no message or with the line: < waiting for device > until I press ^c, and sometimes I actually have to close the Terminal window to get out of it. Is there something different I need to do to get fastboot on the Mac to recognize the Droids?