Firebird 4.0.7

Firebird 4.0 introduces new data types and many improvements without radical changes in architecture or operation, the most important are:

Built-in logical replication;
Extended length of metadata identifiers (up to 63 characters);
New INT128 and DECFLOAT data types, longer precision for NUMERIC/DECIMAL data types;
Support for international time zones;
Configurable time-outs for connections and statements;
Pooling of external connections;
Batch operations in the API;
Built-in cryptographic functions;
New ODS (version 13) with new system and monitoring tables;
Maximum page size increased to 32KB

Release Notes

Please read the Release Notes

Source code
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0.tar.xz	30 MB	Compressed tarball

Windows 32-bit
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0-Win32.exe	15 MB	Windows executable installer
17th Apr 2026	Firebird-4.0.7.3271-0-Win32.zip	21 MB	Zip kit for manual/custom installs

Windows 32-bit Debug Kits (Binary + PDB components)
17th Apr 2026	Firebird-4.0.7.3271-0-Win32-pdb.exe	31 MB	Windows executable installer
17th Apr 2026	Firebird-4.0.7.3271-0-Win32-pdb.zip	55 MB	Zip kit for manual/custom installs

Windows 64-bit
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0-x64.exe	25 MB	Windows executable installer
17th Apr 2026	Firebird-4.0.7.3271-0-x64.zip	23 MB	Zip kit for manual/custom installs

Windows 64-bit Debug Kits (Binary + PDB components)
17th Apr 2026	Firebird-4.0.7.3271-0-x64-pdb.exe	44 MB	Windows executable installer
17th Apr 2026	Firebird-4.0.7.3271-0-x64-pdb.zip	58 MB	Zip kit for manual/custom installs

Linux 32-bit
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0.i686.tar.gz	22 MB	Compressed tarball
17th Apr 2026	Firebird-debuginfo-4.0.7.3271-0.i686.tar.gz	183 MB	Compressed tarball with debug information

Linux 64-bit
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0.amd64.tar.gz	20 MB	Compressed tarball
17th Apr 2026	Firebird-debuginfo-4.0.7.3271-0.amd64.tar.gz	186 MB	Compressed tarball with debug information

Important

Android builds were not thoroughly tested, therefore they should be treated as experimental.

Please report any problems you experience to the development mailing list.

Android ARM32
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0.arm.tar.gz	28 MB	Compressed tarball
17th Apr 2026	Firebird-withDebugInfo-4.0.7.3271-0.arm.tar.gz	85 MB	Debug compressed tarball

Android ARM64
Date	Filename	Size	Description
17th Apr 2026	Firebird-4.0.7.3271-0.arm64.tar.gz	31 MB	Compressed tarball
17th Apr 2026	Firebird-withDebugInfo-4.0.7.3271-0.arm64.tar.gz	85 MB	Debug compressed tarball