Looking at the ISO software for the 1100AP it's a bit had to tell what the latest version of software is. Is it based on the highest position in the directory tree or the highest letter. At the top of the tree is 12.3.8-JEB(GD) yet letter wise if you look further down the tree I see a JEC. Which one is newer or the latest.
general deployment versus
ED ( early ) or LD ( limited )