Hi uc directa,
If you want to update JA Extension, please follow here
http://wiki.joomlart.com/wiki/JA_Extensions_Manager/How-to
You can also use Extension Manager to update JA Wall.
Just go to download page, download separate template package, all plugins, one by one.
Then use Extension Manager and install it.
Important note:
If you site is stable, you do not have to update.
If you does not modify any to the template. Then go ahead and update.
If you just modify little thing, please remember what you make change, then re-apply those change after update.
Anyway, please backup your site (code and database) before process.
Hope it helps.
Regards
