'upgrade1_5.php', can do this -- run it prior to 'update.php' or
the web upgrader.
+If you absolutely cannot make the UTF-8 upgrade work, you can try
+doing it by hand: dump your old database, convert the dump file
+using iconv as described here:
+http://portal.suse.com/sdb/en/2004/05/jbartsh_utf-8.html
+and then reimport it. You can also convert filenames using convmv,
+but note that the old directory hashes will no longer be valid,
+so you will also have to move them to new destinations.
+
Message changes:
* A number of additional UI messages have been chagned from HTML to
wikitext, and will need to be manually fixed if customized.