If you purchased a new Kindle Fire tablet and set everything up correctly:Installed the Cozmo appEnabled Developer Mode (from Settings -> Device Options)Turned on USB debuggingRan the Cozmo appSuccessfully connected to CozmoPut the app into SDK modebut Calypso cannot connect to the tablet, you may be running into a problem with recently shipped Kindles suffering some kind of OS corruption. You can often cure this by doing a "hard reset" on the Kindle.Hard Reset:Power up the Kindle normally. Then, press the power button an HOLD IT DOWN for 40 seconds. After you release the button, the Kindle should boot. This often cures the corruption, but on some machines it doesn't. Those machines may need to be returned to Amazon.