Download the latest version of Whitecream from the Google Play Store or Amazon App Store. 2. Connect your FireStick to your computer via a USB cable and copy the downloaded file to your device's internal storage. 3. Open up Settings on your FireStick and navigate to Applications > Manage Installed Applications > Find Whitecream in the list of apps installed on your device and select it, then press OK to install it on your device. 4. Open up the app and follow the on-screen instructions to set up your account.