I've downloaded opera mini 4.2 from the official source m.opera.com
launching it, during the opera installation progress blackberry asks if I should allow opera to access internet - YES. then opera tells that it can't connect to the internet so can't be installed.
it used to work on .238
Similar thing with opera mini beta 5. I had it running on .238, buggy but working. on .314 it installs but shows empty/white screen