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Amazon releases Fire OS 4: Adds Firefly to tablets, integrates cloud. Amazon's latest mobile operating system lands with a few new features, notably Dynamic Light Control, deep cloud integration, and Firefly product matching for tablets. By Zack Whittaker for Between the Lines |. | Topic: Amazon.
1 Enter and then confirm a new password or PIN, and then select Lock Device. 2  From your Fire Tablet, tap Unlock Device. 3  Swipe in from the right edge of the screen to unlock your device.4  Enter your lock screen password or PIN, and then tap OK. From the list of devices registered to your Amazon account, select your Fire Tablet. 2  Select the Device Actions drop-down menu, and then select Remote Lock. 3  Enter and then confirm a new password or PIN, and then select Lock Device. 4  From your Fire Tablet, tap Unlock Device.