Transmission

Transmission 4.1.1

This is Transmission 4.1.1, a bugfix release.

4.1.0 was in development for over a year, so we've gotten a lot of good feedback, including actionable bug reports, since it was released three weeks ago. 4.1.1 fixes 20+ bugs and also has some performance improvements. All users are encouraged to upgrade to this version.

This progress was possible because of good bug reports and performance logs reported by users. Thanks, and keep them coming!

What's New in 4.1.1

All Platforms

• Fixed a 4.1.0 bug that failed to report some filesystem errors to RPC clients who were querying the system's free space available. (#8258)
• Fixed a 4.1.0 bug that kept a a torrent's updated queue position from being shown. (#8298

Transmission 4.1.0

This is Transmission 4.1.0. We've been working on this release for over
a year now, and we're excited to finally get it over the finish line!

What's New in 4.1.0

Highlights

• Improved µTP download performance. (#6508)
• Added support for IPv6 and dual-stack UDP trackers. (#6687)
• Support trackers that only support the old BEP-7 with &ipv4= and &ipv6=. (#7481)
• New JSON-RPC 2.0-compliant RPC API. (#7269)
• Added optional sequential downloading. (#4795)
• Use native icons for menus and toolbars: SF Symbols on macOS, Segoe Fluent on Windows 11, Segoe MDL2 on Windows 10, and XDG standard icon names everywhere else. (

Transmission 4.1.0-beta.5

This is Transmission 4.1.0-beta.5. We're in feature freeze
for 4.1.0 -- testers and feedback are encouraged!

What's New in 4.1.0-beta.5

Highlights

• Fixed 4.1.0-beta.1 bug where some downloads could get stuck for a long time. (#7899)
• Fixed 4.1.0-beta.4 bug that broke icons on Windows. (#7931)
• Fixed 4.1.0-beta.4 issue that included backwards-incompatible keys in the settings file. (#7917, #7918, #7932, #7995, #8002)
• Return X-Transmission-Rpc-Version header in RPC HTTP 409 res

Transmission 4.1.0-beta.4

This is Transmission 4.1.0-beta.4. We're not in feature freeze yet,
so this release includes some new features as well as bugfixes and
performance improvements.

What's New in 4.1.0-beta.4

Highlights

• Unify RPC and settings.json strings to snake_case, backwards compatible. (#7108)
• New JSON-RPC 2.0-compliant RPC API. (#7269)
• Use native icons for menus and toolbars: SF Symbols on macOS, Segoe Fluent on Windows 11, Segoe MDL2 on Windows 10, and XDG standard icon names everywhere else. (#7819, Qt Client)

All Platforms

Transmission 4.1.0-beta.3

This is Transmission 4.1.0-beta.3. We're not in feature freeze yet, so this release includes some new features as well as bugfixes and performance improvements.

What's New in 4.1.0-beta.3

All Platforms

• Added support for using a proxy server for web connections. (#7486)
• When downloading in sequential mode, flush pieces to disk as soon as they're completed and pass their checksum test. This helps apps that are trying to use the data in realtime, e.g. streaming media. (#7489)
• Respect the min interval and interval keys from any tracker responses. (#7493)
• An

Transmission 4.1.0-beta.2

This is Transmission 4.1.0-beta.2. We're not in feature freeze yet,
so this release includes some new features as well as bugfixes and
performance improvements.

What's New in 4.1.0-beta.2

Highlights

• Support trackers that only support the old BEP-7 with &ipv4= and &ipv6=. (#7481)

All Platforms

• Added support for using a proxy server for web connections. (#5038)
• Added optional sequential downloading. (#6893, #7047)
• Disconnect blocklisted peers immediately upon blocklist update. (#7167

Transmission 4.1.0-beta.1

This is the first beta for 4.1.0! It's been in development in parallel with the 4.0.x bugfix series since February 2023's release of 4.0.0 and has major code changes relative to 4.0.x.

What's New in 4.1.0-beta.1

Highlights

• Added optional sequential downloading. (#4795)
• Added the option preferred-transport to settings.json, so that users can choose their preference between µTP and TCP. (#5939)
• Improved µTP download performance. (#6508)
• Added support for IPv6 and dual-stack UDP trackers. (#6687)
• Fixed 4.0.6 bug where Tra

Transmission 4.0.6

This is a bugfix-only release. Everyone's feedback on 4.0.x has been very helpful -- thanks for all the suggestions, bug reports, and pull requests!

What's New in 4.0.6

All Platforms

• Improved parsing HTTP tracker announce response. (#6223)
• Fixed 4.0.0 bug that caused some user scripts to have an invalid TR_TORRENT_TRACKERS environment variable. (#6434)
• Fixed 4.0.0 bug where alt-speed-enabled had no effect in settings.json. (#6483)
• Fixed 4.0.0 bug where the GTK client's "Use authentication" option was not saved between's sessions. (#6514)
• Fixed 4.0.0 bug where the filename for single-file tor

Transmission 4.0.5

This is a bugfix-only release. Everyone's feedback on 4.0.x has been very helpful -- thanks for all the suggestions, bug reports, and pull requests!

What's New in 4.0.5

Highlights

• Fixed 4.0.0 bug where the IP address field in UDP announces were not encoded in network byte order. [BEP-15]. (#6132)
• Fixed a bug that incorrectly escaped JSON strings in some locales. (#6005, #6133)
• Fixed 4.0.4 decreased download speeds for people who set a low upload bandwidth limit. (#6134)

All Platforms

• Fixed bug that prevented editing trackers on magnet links. (#5957)
• Fixed HTTP tracker announces and