Firebird 4.0 introduces new data types and many improvements without radical changes in architecture or operation, the most important are: logical replication, longer metadata identifiers, international time zone support, timeouts for connections and statements.

Documentation: Release Notes (PDF available), Language Reference (PDF available) and other manuals.

Win32

Win64

Linux x86

Linux AMD64

Android ARM32

Android ARM64

Release Date	File Name	Size	Description
Sources
December 22, 2021	Firebird-4.0.1.2692-0.tar.xz	29 MB	Compressed tarball
Win32
32-bit Kits
December 22, 2021	Firebird-4.0.1.2692-0-Win32.exe	15 MB	Windows executable installer, recommended for first-time users
December 22, 2021	Firebird-4.0.1.2692-0-Win32.zip	21 MB	Zip kit for manual/custom installs
32-bit Debug Kits (Binary + PDB components)
December 22, 2021	Firebird-4.0.1.2692-0-Win32-pdb.exe	28 MB	Windows executable installer (debug information included)
December 22, 2021	Firebird-4.0.1.2692-0-Win32-pdb.zip	45 MB	Zip kit for manual/custom installs (debug information included)
Win64
64-bit Kits
December 22, 2021	Firebird-4.0.1.2692-0-x64.exe	25 MB	Windows executable installer, recommended for first-time users
December 22, 2021	Firebird-4.0.1.2692-0-x64.zip	23 MB	Zip kit for manual/custom installs
64-bit Debug Kits (Binary + PDB components)
December 22, 2021	Firebird-4.0.1.2692-0-x64-pdb.exe	41 MB	Windows executable installer (debug information included)
December 22, 2021	Firebird-4.0.1.2692-0-x64-pdb.zip	47 MB	Zip kit for manual/custom installs (debug information included)
Linux x86
32-bit Kits
December 22, 2021	Firebird-4.0.1.2692-0.i686.tar.gz	21 MB	Compressed tarball
December 22, 2021	Firebird-debuginfo-4.0.1.2692-0.i686.tar.gz	177 MB	Debug build, compressed tarball
Linux AMD64
64-bit Kits
December 22, 2021	Firebird-4.0.1.2692-0.amd64.tar.gz	19 MB	Compressed tarball
December 22, 2021	Firebird-debuginfo-4.0.1.2692-0.amd64.tar.gz	180 MB	Debug build, compressed tarball
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
32-bit Kits
December 22, 2021	Firebird-4.0.1.2692-0.arm.tar.gz	28 MB	Compressed tarball
December 22, 2021	Firebird-withDebugInfo-4.0.1.2692-0.arm.tar.gz	82 MB	Debug build, compressed tarball
Android ARM64
64-bit Kits
December 22, 2021	Firebird-4.0.1.2692-0.arm64.tar.gz	31 MB	Compressed tarball
December 22, 2021	Firebird-withDebugInfo-4.0.1.2692-0.arm64.tar.gz	82 MB	Debug build, compressed tarball