http://l3tczdiiwoo63iwxty4lhs6p7eaxop5micbn7vbliydgv63x5zrrrfyd.onion/4.0.0/user-manual/installation.html
If you have customized, local templates, these
should be stored safely in a separate directory and defined in config by the "templdir" directive. It is of course wise to always back-up any important
configuration files "just in case" . If a previous version of Privoxy is already running, you will have to restart it manually.