First no it is not hidden. About a week ago I attempted to upgrade from .81 to 110 (yea yea beta I know) and had a **** of a time to get any version back to my phone and when I finally did I lost my BB Messenger and Maps. Not a big deal cause I don't use either often but sometimes I do and I would like to have them back. I have installed .102 and neither program shows still. I can't find the map program on blackberry site and messenger won't load for 4.5. Any ideas?
you will need to uninstall the beta os from your computer then REBOOT. Then once your system has rebooted install a "released" os and use DM to upgrade. As stated above you will still need to make sure the apps, languages are selected or deselected to your liking before you proceed with the os install. I would recommend the jl commander app to do the upgrade but if you don't know what you're doing you can brick your phone. Search for a how to for jl commander here at cb. Good luck.
Did you download 4.5 or do a reinstall of the application onto your pc after you redownloaded? The OS has to be installed to the pc after DM is installed. If the OS does not show up in DM once you have your device connected try disconnecting your PC from the internet before you open DM.