In previous articles, I upgraded my computer to Lion and took the time to install MAMP 2. I discovered while using some Zend Framework components that prior to MAMP 2.0.2, there was a bug with the iconv functions. This bug basically caused several pieces of the framework to timeout. I had unfortunately installed MAMP 2.0.1, so I needed to update to the newest version so that I could again develop ZF-based applications on my local environment. While following the previous MAMP tutorials I wrote, I realized that there are several changes to the default configuration that I needed to keep backups of so that I could make the same changes on the new version… MAMP apparently just copies over the old directory completely, it doesn’t make any intelligent updates (so you could lose VHOST, PHP, etc changes). I kept the following backups: /Applications/MAMP/conf/apache/httpd.conf /Applications/MAMP/conf/apache/extra/httpd-vhosts.conf /Applications/MAMP/bin/php/php5.3.6/conf/php.ini It was a decently easy upgrade all things considered, but remember to keep backups of your local changes!