[lilshorty]

ok. i am so lost here. i see ppl talking about upgrading OS and downgrading OS

1. wat is an OS?
2. does upgrading it make any difference?
3. how do i know which OS i have on my phone?

[JSanders]

1. http://www.blackberryforums.com/gene...ml#post1492042
Please don't double post your questions in the forum, it's tedious.

2. A difference in what?

3. Options > About, third line down beginning with v.4.x