The first step is to make all updates available by Garmin WebUpdater. Have you tried?
Nuvi 3597; 3490; Etrex 30; Oregon 200 (from Approach S5)
New version was found in newest nuvi 2595. There are not official update on garmin.com.
Only one difference was found that themes lack the all section (see list below) with the exception of <PRESENTATION ID="Guidance">:
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Last edited by Giomen; 18th October 2013 at 04:36 AM.
Love your wife? Buy yourself a GPS for answering to her favorite question: "Dear, where are you?".
I take time and write down all Theme command from nuvi 34xx FW.
Spoiler: Here is all code
Black = command that we already have in Themes
Red = command that is in Themes but not in FW
No marked = command that is not in Themes