Its firmware is officially user-upgradable, since it is a Linux-based computer, as opposed to third-party "patching" of alternate receivers. Firmware is based on Enigma 2, which was originally designed for Dreambox by Dream Multimedia. All units support Conaxconditional access (CA) system, with software-emulated CA Modules (CAMs) available for many alternate CA systems. The built-in Ethernet interface allows networked computers to access the recordings on the internal hard disks and stream live picture from the tuners. It also enables the receiver to store digital copies of DVB MPEG transport streams on networked filesystems or broadcast the streams as IPTV to VideoLAN and XBMC Media Center clients. Unlike many PC based PVR systems that use free-to-air type of DVB receiver cards, the built-in conditional access allows receiving and storing encrypted content.
In the middle of September 2011, at Vu+ Day in Amsterdam, it was announced that the next-generation Vu+ DVB satellite receivers to be released publicly in the end of 2012 will be using XBMC Media Center software for its GUI, a development project that they call XBMC4STB (XBMC for Set-Top-Boxes).