Firebird Project has released Firebird 2.5.5.
his minor release has many bug fixes and highly recommended to be used in production environments, especially if you are running Firebird 2.5.0, 2.5.1, 2.5.3 or 2.5.4 – upgrade to 2.5.5 as soon as possible!
Please note that upgrade from 2.5.1 will require backup/restore, upgrade to other versions can be done without backup/restore.
Download (Windows, Linux, Mac OSX ) links for Firebird 2.5.5 are below:
Source ------
http://sourceforge.net/projects/firebird/files/firebird/2.5.5-Release/Firebird-2.5.5.26952-0.tar.bz2/download
Win32 -----
http://sourceforge.net/projects/firebird/files/firebird-win32/2.5.5-Release/Firebird-2.5.5.26952_0_Win32.exe/download
http://sourceforge.net/projects/firebird/files/firebird-win32/2.5.5-Release/Firebird-2.5.5.26952-0_Win32.zip/download
http://sourceforge.net/projects/firebird/files/firebird-win32/2.5.5-Release/Firebird-2.5.5.26952-0_Win32_embed.zip/download
http://sourceforge.net/projects/firebird/files/firebird-win32/2.5.5-Release/Firebird-2.5.5.26952_0_Win32_pdb.exe/download
http://sourceforge.net/projects/firebird/files/firebird-win32/2.5.5-Release/Firebird-2.5.5.26952-0_Win32_pdb.zip/download
http://sourceforge.net/projects/firebird/files/firebird-win32/2.5.5-Release/Firebird-2.5.5.26952-0_Win32_embed_pdb.zip/download
Win64 -----
http://sourceforge.net/projects/firebird/files/firebird-win64/2.5.5-Release/Firebird-2.5.5.26952_0_x64.exe/download
http://sourceforge.net/projects/firebird/files/firebird-win64/2.5.5-Release/Firebird-2.5.5.26952-0_x64.zip/download
http://sourceforge.net/projects/firebird/files/firebird-win64/2.5.5-Release/Firebird-2.5.5.26952-0_x64_embed.zip/download
http://sourceforge.net/projects/firebird/files/firebird-win64/2.5.5-Release/Firebird-2.5.5.26952_0_x64_pdb.exe/download
http://sourceforge.net/projects/firebird/files/firebird-win64/2.5.5-Release/Firebird-2.5.5.26952-0_x64_pdb.zip/download
http://sourceforge.net/projects/firebird/files/firebird-win64/2.5.5-Release/Firebird-2.5.5.26952-0_x64_embed_pdb.zip/download
Linux32 -------
http://sourceforge.net/projects/firebird/files/firebird-linux-i386/2.5.5-Release/FirebirdSS-2.5.5.26952-0.i686.rpm/download
http://sourceforge.net/projects/firebird/files/firebird-linux-i386/2.5.5-Release/FirebirdSS-2.5.5.26952-0.i686.tar.gz/download
http://sourceforge.net/projects/firebird/files/firebird-linux-i386/2.5.5-Release/FirebirdSS-debuginfo-2.5.5.26952-0.i686.tar.gz/download
http://sourceforge.net/projects/firebird/files/firebird-linux-i386/2.5.5-Release/FirebirdCS-2.5.5.26952-0.i686.rpm/download
http://sourceforge.net/projects/firebird/files/firebird-linux-i386/2.5.5-Release/FirebirdCS-2.5.5.26952-0.i686.tar.gz/download
http://sourceforge.net/projects/firebird/files/firebird-linux-i386/2.5.5-Release/FirebirdCS-debuginfo-2.5.5.26952-0.i686.tar.gz/download
Linux64 -------
http://sourceforge.net/projects/firebird/files/firebird-linux-amd64/2.5.5-Release/FirebirdSS-2.5.5.26952-0.amd64.rpm/download
http://sourceforge.net/projects/firebird/files/firebird-linux-amd64/2.5.5-Release/FirebirdSS-2.5.5.26952-0.amd64.tar.gz/download
http://sourceforge.net/projects/firebird/files/firebird-linux-amd64/2.5.5-Release/FirebirdSS-debuginfo-2.5.5.26952-0.amd64.tar.gz/download
http://sourceforge.net/projects/firebird/files/firebird-linux-amd64/2.5.5-Release/FirebirdCS-2.5.5.26952-0.amd64.rpm/download
http://sourceforge.net/projects/firebird/files/firebird-linux-amd64/2.5.5-Release/FirebirdCS-2.5.5.26952-0.amd64.tar.gz/download
http://sourceforge.net/projects/firebird/files/firebird-linux-amd64/2.5.5-Release/FirebirdCS-debuginfo-2.5.5.26952-0.amd64.tar.gz/download
MacOS -----
http://sourceforge.net/projects/firebird/files/firebird-MacOS-X_darwin/2.5.5-Release/FirebirdSS-2.5.5-26933-i386.pkg/download
http://sourceforge.net/projects/firebird/files/firebird-MacOS-X_darwin/2.5.5-Release/FirebirdSS-2.5.5-26933-lipo-x86_64.pkg/download
http://sourceforge.net/projects/firebird/files/firebird-MacOS-X_darwin/2.5.5-Release/FirebirdSS-2.5.5-26933-x86_64.pkg/download
http://sourceforge.net/projects/firebird/files/firebird-MacOS-X_darwin/2.5.5-Release/FirebirdCS-2.5.5-26933-i386.pkg/download
http://sourceforge.net/projects/firebird/files/firebird-MacOS-X_darwin/2.5.5-Release/FirebirdCS-2.5.5-26933-lipo-x86_64.pkg/download
http://sourceforge.net/projects/firebird/files/firebird-MacOS-X_darwin/2.5.5-Release/FirebirdCS-2.5.5-26933-x86_64.pkg/download