A new version of the installer, with svn 1.5.2, was just released to
http://reposserver.com/. However it is easy to upgrade Subversion
only, thanks to the cleanly separated layout of the installation.
Download the zip distribution from http://subversion.tigris.org/
(Apache 2.2 binaries, filename svn-win32-1.5.2.zip). Then replace the
contents of the "subversion" folder in the ReposServer program folder.
Restart Apache and you're done. Optionally delete the share\locale\
folder, unless you want the subversion server to run a non-english
locale.
Upgrading PHP or Apache is just as simple, except that there are some
config files that you need to keep. For PHP, php\php.ini must be kept.
For Apache, I recommend you keep the entire "conf" folder. The problem
with Apache is that there is no zip distribution, but to extract the
contents from the msi file you may use:
start /wait msiexec /a apache_2.2.9-win32-x86-openssl-0.9.8h-r2.msi
TARGETDIR=C:\apache /qn
As always, make a backup of the old version before overwrite so you can revert.
/Staffan