Yaouh! (Yet Another Osm Updater H) is an utility for update maps of TangoGPS. It checks the md5 of remote file and of local file, if is different update the file. It reads the TangoGPS config file for know where is store the file of the maps. For now support only OSM maps (support for all maps in 0.3_alpha).
opkg install http://minucci.net/file/opkg/yaouh_0.2.1_all.opk
Or you can use repository http://minucci.net/file/opkg/ . For add repository follow this command:
cd /etc/opkg wget http://minucci.net/file/gecco-feed.conf
opkg update opkg install yaouh
I enhanced the code a bit (support for other maps, also inverted ones):
yaouh0.3_experimental.py  (Old)
yaouh0.3_alpha.py  (logo visible over button, combobox added, ...)
Please give feedback.
it needs the shell at the moment (I'm not really good in gui things ;)) and it is possible to start a second update-process (not beautiful to see the progress bar flickering)
fixed in yaouh0.3_alpha.py
yaouh updates some maps (osmarender, google) also if there aren't a newer version.
the gui isn't that beautiful at the moment