I am at wit's end with my new Q5. On day 2 of ownership, I upgraded to the latest OS release and now the camera won't work. BB support (via twitterwith 72h lags between replies) supplied a fix according to their KB article on the issue... simply pull the battery. Official BB support must be drunk, since the Q5 has an internal battery that can't be pulled without dismantling the unit.
Soooo... I've been looking for a link to autoload an older stable OS, presumably back to the 10.1 that my unit came with. None of the links (including the one on this site) are active.