New information provided by sources within Air France suggests, that the ACARS messages of system failures started to arrive at 02:10Z indicating, that the autopilot had disengaged and the fly by wire system had changed to alternate law. Between 02:11Z and 02:13Z a flurry of messages regarding ADIRU and ISIS faults arrived, at 02:13Z PRIM 1 and SEC 1 faults were indicated, at 02:14Z the last message received was an advisory regarding cabin vertical speed. That sequence of messages could not be independently verified.
If the aircraft had been flipped onto its back, Alternate Law, ADIRU and ISIS failures would make some sense. Then the crew find themselves in a monster CB, at night with no flight instruments, so they loose control, aircraft breaks up, hence loss of pressurisation?