Try using the site: Download Instructions which includes upgrade info (and if the info has problems, let us know as we are tuning this whole new site.)
You shoud load version 2.3.0 - it is the most stable.
Philippe Lindheimer - FreePBX Project Lead
http//freepbx.org - IRC #freepbx
I don’t understand your question. If you mean which version of FreePBX (which was once called AMP) then look in the upper left hand corner under the logo.
Philippe Lindheimer - FreePBX Project Lead
http//freepbx.org - IRC #freepbx