why did you wait to upgrade?
I am out of the country and on the road for three months at a time, and because there was no notification about any upgrade in 2.92. It was not until I started up a any wordpress site I notice there was newer version.
There is an upgrade button in 2.9.2 under tools at least from what I tested
In my version it is telling me I have the latest version of WordPress. You do not need to upgrade. I try to reinstall but it just install the same version.
I have download the version 3.5.1 but I guess my biggest question is what is the best way to upgrade through cpanel and if I install this version will my post still be there?