blackberry curve 8520 OS5 vs OS6, time: 5:32Tags: 7th band dooset daram album s , , Android games ing websites , , Kau lah yang ku sayang adobe . Jan 29, · I installed OS6 v directly to my new BB curve 3G which had OS or something similar preinstalled, so i don't know whats the difference between OS and OS if thats what you are asking here, but about OS, ITS AMAZING Since this is my first blackberry, i was really impressed by its UI and performance just as I bought it with the OS 5 installed. Nov 25, · Re: OS: / (English + East Asian) I am using WIND in Canada, and it took me 4 months talking to their Tech Support people to struggle with the Chinese Character support in my Oct 08, · How to downgrade Blackberry from OS 6 to OS 5? Downgrade preloaded os 6 on blackberry curve 3g to os 5? Cannot install Blackberry OS? More questions. If I restore my blackberry will it change my software os? How do i downgrade my blackberry operating software? Answer nsd-travel.com: Resolved.