Installing FirstClass client on BB10 Step 1: You will need to put the BlackBerry into Development mode to allow side loading:  Settings - Security and Privacy - Development Mode Note the IP address set in this screen, customize it if required, set a password Step 2: Download and install DDPB which was created to load Android apps onto the Playbook, works with BB10         Requires a Windows Computer Step 3: Download the converted FirstClass App version 1.4.137.12103 Step 4: Launch DDPB and connect your BB10 to the computer.  You can choose to detect device or put in the IP address from the Dev mode screen.  Hit Connect. Once you are connected, simply add the .bar file you have saved to the list of apps to install, and click install.