Installing Pandora is rather easy. You will need 10 minutes of time and a FAT32 formatted USB stick with at least 20 MB of free space.
The first thing you'll need to do is download the latest version of Pandora from http://pandora-cnc.eu/download. There are two types of installers available:
If you are running Windows, you can use the simple Windows installer to copy the Pandora installer to the root directory of a FAT32 formatted USB stick. E.g. if your USB stick shows up in Explorer as E:\ you choose the target E:\ in the installer. If the installer prompts you to overwrite something, choose to overwrite anything. Note, that this will only overwrite installation files and will keep your files intact. This is still on your own risk. Better back up your USB stick before installing Pandora.
The ZIP-Archive is the slightly more advanced and OS-independant option for installation. Simply extract all the files from the archive and copy them to the root of your USB stick (e.g. E:_ or /media/MY_USBSTICK).
To install the firmware, safely unmount the USB stick from your computer and put it aside. Now, cut the power to the controller and wait until you hear a beep or wait 10 seconds. Then, insert the USB stick into the controller's USB port and re-apply power to it. Wait, until the controller has rebooted once after showing the installation screen and returned back to the default home screen. It should now display DDCSV1.1 PLUS in the bottom right corner of the screen. Otherwise, try repeating the instructions, making sure that the installation files are certainly located in the uppermost directory of the USB stick.