If you are comfortable using development release of phpipam, along with submitting feedback and filing bug report for development releases you can use GIT. We have switched to Github since version 1.2, so you will find latest development releases only here.
git clone https://github.com/phpipam/phpipam.git phpipamdevel
This will download current code to phpipamdevel directory.
You can also use latest tarball from Github, it can be downloaded here: https://sourceforge.net/p/phpipam/code/HEAD/tarball. Replace your current phpipam working directory with code form tarball.