Those are not version-related files, they're SQLite log files. These files get created automatically when write-ahead logging is enabled. That's not the default in iOS 6, but it's possible if you use PRAGMA journal_mode=WAL;
. It might or might not be the default in iOS 7 (I have no comment at this time).
I don't know why Firefox and SQLiteManager can't open the file. I speculate that they're both using an old version of SQLite (since WAL is only available as of SQLite 3.7.0). Regardless, they have nothing to do with whether the necessary files are available in your app. You can find out what's included in the app by just looking. The .app
is just a directory, really, so take a look inside and see what's there.