PM4 Firmware Timeline

The current versions of PM4 Firmware are as follows:

Indoor rowers—The version you need depends on the age of your PM4, although the functionality is the same in each case. Versions 29 and lower are for monitors with the original microprocessor, which was discontinued by the manufacturer. In order to use a different microprocessor, we needed to redesign the PM4. The redesign did not alter functionality between PM4s using different microprocessors but did require a new firmware version.
The first PM4s to use the new microprocessor were put into circulation in June of 2008. These PM4s were released with PM4 Firmware Version 304. If your PM4 Firmware Version is 304 or higher, then PM4 Firmware Version 332 is the current version for your monitor. Otherwise, PM4 Firmware Version 29 is the current version for your monitor. The firmware versions are not interchangeable. That is, Firmware Version 303–332 will not work on a PM4 with Firmware Version 29 and lower, and vice versa.
- Version 332 (released July 2018)
- Version 29 (released November 2012)
SkiErgs—Version 732 (released July 2018)

Current firmware releases resolve many of the issues identified in earlier firmware versions. If you are not running the most current firmware, we recommend updating your monitor.

Timeline for Firmware Versions 304–332

July 2018—PM4 Firmware Version 332 released.
September 2017—PM4 Firmware Version 330 released. This release contained:
- Support for new HRM-RUN belts
- Rebuilt firmware post-PM5
- Fixed USB issue with El Capitan
- Added ability to save undefined rest interval workouts to custom/favorites list
- Added ability to save undefined rest interval workouts to logcard
- Fixed issue with not logging 100,000m interval workouts properly
November 2012—PM4 Firmware Version 318 released. Version 318 contained support for ErgData.
September 2012—PM4 Firmware Version 317 released. Version 317 contained:
- Added capabilities for the USB connection.
- The addition of Slovak.
- The removal of Japanese due to lack of space.
- Additional ANT+ capabilities for Wahoo Key applications such as ErgBuddy and Kinomap; as well as Garmin FR 60 210 310 610 910 and other Garmin watch connections.
November 2010—PM4 Firmware Version 313 released. Version 313 contained:
- The new biathlon and undefined rest features.
- Japanese as a language option
- Changes to the Chinese language translations
- Fixes for the USB connection when using VMWare
May 2010—PM4 Firmware Version 311 released. Version 311 contains the following changes:
- Fixes for the issue that occurred when canceling and setting up a subsequent PC-less race
- Enhancements to various error codes so the user is better informed about what went wrong
- Fix for erratic cursor on some screens
- New loader to improve reliability of firmware updates on some monitors
- Error codes 50–53 (drag factor) now prevented when doing fast arms-only work, provided those strokes are not the first few strokes of a workout or interval
- Text changes related to Suunto/Garmin/ANT+ heartrate
- Venue Racing improvements for logging workouts and support for LogCards
- Automatic detection and repair of corrupt internal Log Memory
- Fix for the problem with false error codes (such as code 573 error) and some other erratic behaviors (for example, cursor not blinking or intervals not proceeding)
February 2010—PM4 Firmware Version 310 released. In version 310, error code 50 was removed from PM4s for Models A, B, and C Indoor Rowers. For Model D and E Indoor Rowers, error code 50 was enhanced to provide the cause of the error, allowing for more accurate technical support.
May 2009—PM4 Firmware Version 308 released. Version 308 contained the following changes:
- Translation and other typographical changes
- Drag factor correctly displays for very low drag
- Repeated bad drag factors will cause Code 50 error
- Fix for rare issue when coasting to the end of a piece and being left with 1m left on the display
- Prevent favorites from being corrupted when certain combinations of variable intervals are programmed and they exceed the storage capacity of the Favorites memory
- Diagnostics now require you to hold down the Menu|Back button for one second during reset
- Improved false start reporting and some performance improvement for venue racing
- Improvements to Garmin ANT and Suunto heart rate display
- Fix for Leap Year bug
- Fix for problem with some monitors powering down when the LogCard is inserted
Note: Macintosh OSX users with HP printer software installed should upgrade to the "Beta" firmware (PM4 Firmware Version 308 Beta 1 and higher). See PM4 Firmware Known Issues for more information.
October 2008—PM4 Firmware Version 306 released. Version 306 remedies the issue where verification codes were incompatible with Concept2's Online World Ranking.
September 2008—PM4 Firmware Version 305 released. Version 305 contained a fix related to Venue Racing.
June 2008, Initial Release—Version 304 shipped on all monitors containing the new microprocessor.

Timeline for Firmware Versions 29 and Lower

November 2012—PM4 Firmware Version 29 released. This version supports ErgData.
September 2012—PM4 Firmware Version 28 released. Version 26 contained:
- Added capabilities for the USB connection.
- The addition of Slovak.
- The removal of Japanese due to lack of space.
- Additional ANT+ capabilities for Wahoo Key applications such as ErgBuddy and Kinomap; as well as Garmin FR 60 210 310 610 910 and other Garmin watch connections.
November 2010—PM4 Firmware Version 26 released. Version 26 contained:
- The new biathlon and undefined rest features.
- Japanese as a language option
- Changes to the Chinese language translations
- Fixes for the USB connection with using VMWare
- Support for new versions of PM3 and PM4 hardware
February 2010—Version 25 released. Version 25 contains a fix for the problem where code 42 errors were occurring when certain Help screens were accessed.
January 2010—Version 24 released. Version 24 contained the following change:
- Error code 50 was removed from PM4s for Models A, B, and C Indoor Rowers. For Model D and E Indoor Rowers, error code 50 was enhanced to provide the cause of the error, allowing for more accurate technical support.
November 2007—Version 21 released.
October 2007—Version 19 Beta 5 released.
September 2007—Version 19 released to remedy known issues with Version 16.
December 2006—Version 16 released to remedy known issues with Version 14.
September 2006—Version 15 released only to venue racing users with fixes specific to venue racing. Also contains a fix that allows older Suunto T6 belts to work properly.
July 2006, Initial Release—Version 14 shipped on all PM4s

Timeline for Firmware Version 732

July 2018—PM4 Firmware Version 732 released.
November 2012—PM4 Firmware Version 709 released. Version 709 contained:
- Support for new HRM-RUN belts
- Rebuilt firmware post-PM5
- Fixed USB issue with El Capitan
- Added ability to save undefined rest interval workouts to custom/favorites list
- Added ability to save undefined rest interval workouts to logcard
- Fixed issue with not logging 100,000m interval workouts properly
November 2012—PM4 Firmware Version 709 released. Version 709 contains support for ErgData.
September 2012—PM4 Firmware Version 708 released. Version 708 contained:
- Added capabilities for the USB connection.
- The addition of Slovak.
- The removal of Japanese due to lack of space.
- Additional ANT+ capabilities for Wahoo Key applications such as ErgBuddy and Kinomap; as well as Garmin FR 60 210 310 610 910 and other Garmin watch connections.