It's quite easy:
- In
Extension Manager
(EM
) find the RealURL and set optionAutomatic configuration file format
toPHP source (slow!)
(with automatic conf still enabled!) - Remove the file
typo3conf/realurl_autoconf.php
(as far as I remember), clear all caches and refresh the main page, the autoconf file will be recreated in unserialized version. - Rename the file to
typo3conf/realurl_conf.php
, go to EM again and uncheck theautomatic configuration
option.
After clearing the caches and you'll be switched to manual config built from the automatic one.