Here you can find the latest Firebird 2.5.x stable
For all LTS Ubuntu releases
Here are instructions to install
You can update your system with unsupported packages from
this untrusted PPA by adding ppa:mapopa/ppa
to your system's Software Sources.
(Read about installing)
This PPA can be added to your system manually by copying
the lines below and adding them to your system's software
deb http://ppa.launchpad.net/mapopa/ppa/ubuntu YOUR_UBUNTU_VERSION_HERE main
deb-src http://ppa.launchpad.net/mapopa/ppa/ubuntu YOUR_UBUNTU_VERSION_HERE main
For questions and bugs with software in this PPA please contact
Popa Adrian Marius.