A400 Software Version History
Latest Releases
A400 Display Update
Date: June 16, 2026
Version: 1.7.0
This update supports new installations without the Hub.
Improvements
- More reliable hub reconnection. Displays no longer get stuck unable to retry after a connection drop, and the connection is now explicitly opened before the compatibility check so it no longer fails silently.
- Cloud reconnection now uses a tiered retry schedule (faster early retries, gradually backing off) instead of ramping to the maximum delay too quickly on flaky connections.
- Background syncing now shuts down cleanly: in-flight syncs are allowed to finish and record their final status before exit, so sets no longer get stranded in a "syncing" state.
- Cloud-mode displays without a saved credential now run in standalone Home mode while cloud claiming is being finalized, instead of stopping at the claim screen.
- Sync logs are now tagged with their source for easier tracing of connection and sync issues.
Bug Fixes
- Fixed workout set updates during review occasionally applying to the wrong set; updates are now matched by unique ID.
- Exercise data is no longer cleared from the local cache when a refresh fails, so a dropped connection won't leave the display without exercises.
- Handled server errors during background syncing more gracefully so they retry instead of failing.
Hub Update
Date: June 3, 2026
Version: 1.4.6
- Improved build and release consistency with updated infrastructure dependencies.
Release History
A400 Display Updates
Version 1.7.0 – A400 Display Update (June 16, 2026)
This update supports new installations without the Hub.
Improvements
- More reliable hub reconnection. Displays no longer get stuck unable to retry after a connection drop, and the connection is now explicitly opened before the compatibility check so it no longer fails silently.
- Cloud reconnection now uses a tiered retry schedule (faster early retries, gradually backing off) instead of ramping to the maximum delay too quickly on flaky connections.
- Background syncing now shuts down cleanly: in-flight syncs are allowed to finish and record their final status before exit, so sets no longer get stranded in a "syncing" state.
- Cloud-mode displays without a saved credential now run in standalone Home mode while cloud claiming is being finalized, instead of stopping at the claim screen.
- Sync logs are now tagged with their source for easier tracing of connection and sync issues.
Bug Fixes
- Fixed workout set updates during review occasionally applying to the wrong set; updates are now matched by unique ID.
- Exercise data is no longer cleared from the local cache when a refresh fails, so a dropped connection won't leave the display without exercises.
- Handled server errors during background syncing more gracefully so they retry instead of failing.
Version 1.6.1 – A400 Display Update (June 1, 2026)
New Features
- Keiser Metrics cloud mode: Displays can now connect directly to the Keiser Metrics cloud in addition to an on-prem A400 hub. The backend mode is selected automatically on first machine configuration and can be changed later from the settings page.
- Machine claiming with QR code: Redesigned machine claim flow. The display shows a scannable QR code and step-by-step instructions, with a live countdown, automatic refresh of expired claim codes, and a success confirmation screen. Cloud-based claiming is supported in Metrics mode.
- Automatic software updates: The display now checks for and applies software updates automatically, including over the Metrics cloud.
- Remote support: Secure remote support (WireGuard) is auto-provisioned when a machine is first claimed, with a button to restart remote support from the admin panel.
Supported Models
- Re-added model 1698.
Improvements
- Smoother hold-to-adjust behavior on the resistance buttons.
- Resistance keypad and 1RM picker are now bounded by each machine's force limits.
- Live view now shows the last recorded resistance.
- More consistent resistance and force unit labels; standardized the pound abbreviation to "lb".
- Reworked workout set storage and background syncing for improved reliability, including a manual sync option and a new Storage tab in the admin panel.
- Reduced noisy status data events and improved time resynchronization with the machine.
Bug Fixes
- Fixed bilateral simulation behavior on rack machines.
- "Go Mode" no longer incorrectly defaults to unilateral.
- Removed Left/Right/Both options from the normal session setup screen (these belong only to the ten-rep test on unilateral machines).
- Fixed several display label bugs.
- Fixed force input conversion for rotary machines.
- Improved sign-in and member selection handling.
- Fixed issue with workout set syncing in background.
Version 1.5.2 – A400 Display Update (February 27, 2026)
- Fixed bilateral simulation behavior on rack machines.
- Fixed back button appearing greyed out on the change members screen.
- Fixed stale selection state when switching between members.
- Fixed workout summary chevrons staying highlighted when they should be disabled.
- Fixed long names overflowing on the top bar.
- Fixed PIN not clearing on subsequent user sign-ins.
Version 1.5.1 – A400 Display Update (October 1, 2025)
- Fixed data syncing process to prevent failed syncs from not being able to resync.
Version 1.5.0 – A400 Display Update (June 30, 2025)
- Introduced new button components across the app for improved consistency and responsiveness.
- Real-time updates to display labels and measurement units throughout the UI.
- Enhanced operating schedule controls with flexible time and day configurations.
- Improved software update process
- Rotary machines now display velocity in either rad/s or deg/s, depending on your selected unit settings
- Refined screen brightness and sleep/wake behavior during operating hours.
- CSV exports now feature clearer headers, aligned with system settings.
- Improved rep selection and validation during workouts.
- Corrected unit display for force and velocity across various widgets.
Version 1.4.3 – A400 Display Update (May 27, 2025)
- Fixed local database size issue
- Fixed parsing issue with latest firmware for standing hip machine.
Version 1.4.2 – A400 Display Update (May 22, 2025)
- Fixed missing arm length for 2235 and 2721 models
Version 1.4.1 – A400 Display Update (April 30, 2025)
- Fixed missing arm length for 2331, 2431, and 2821 models
Version 1.4.0 – A400 Display Update (April 24, 2025)
- Adds 3011 Heavy Performance Trainer (PT)
Version 1.3.0 – A400 Display Update (March 28, 2025)
- Users can now choose between displaying torque units vs non-torque units for rotary machines. This setting is set through the Manager App so it synchronizes across all machines.
- Automatic serial port switching for new machines to support an alternative serial port for the machine.
- Fixed exercises that were not being displayed for the proper Lat Pull down machine.
- Fixed users focus or data mode from changing after a workout set was synced to the hub.
Version 1.2.0 – A400 Display Update (December 12, 2024)
- Updated Authentication UI to allow any length PIN.
- Fixed white screen on Authentication page.
- Fixed connection issues with Hub.
- Fixed logging issues that allowed tables to grow without restrictions.
- Fixed selected member after completing a set.
Hub Updates
Version 1.4.6 – Hub Update (June 3, 2026)
- Improved build and release consistency with updated infrastructure dependencies.
Version 1.4.5 – Hub Update (June 3, 2026)
- Enhanced the build pipeline to securely authenticate against the private package registry, improving release reliability.
Version 1.4.4 – Hub Update (June 2, 2026)
- Improved server stability and build consistency with internal infrastructure updates.
Version 1.4.3 – Hub Update (June 1, 2026)
- Improved server stability and build consistency with internal infrastructure updates.
Version 1.4.2 – Hub Update (May 31, 2026)
- Updated to the production Metrics SDK for improved data reliability.
Version 1.4.1 – Hub Update (May 31, 2026)
- Added hub registration status endpoint so displays can confirm cloud connectivity.
- Added cloud mode response support and new metrics endpoints.
- Synced hub registration state across server and worker for consistent behavior.
Version 1.4.0 – Hub Update (May 27, 2026)
- Added hub registration and cloud linking to connect facilities to Keiser Metrics.
- Added member account and staff account syncing between the hub and cloud.
- Added a secure WireGuard networking endpoint for encrypted hub connectivity.
- Upgraded to the latest Metrics SDK for improved data accuracy and reliability.
Version 1.3.8 – Hub Update (February 25, 2026)
- Improved error logging and serialization for better diagnostics.
Version 1.3.7 – Hub Update (September 5, 2025)
- Improved server stability and build consistency with updated infrastructure dependencies.
Version 1.3.6 – Hub Update (July 8, 2025)
- Fixed velocity data precision to display the correct number of decimal places based on the selected unit settings.
Version 1.3.4 – Hub Update (July 2, 2025)
- Fixed rotary velocity conversions in data exports.
Version 1.3.2 – Hub Update (April 2, 2025)
- Added a Torque Enable option that allows all rotary machines to synchronize settings.
- Updated CSV export functionality to align with the Hub settings as specified by the user.
Version 1.2.5 – Hub Update (February 14, 2025)
- Fixed CSV Import: Resolved an issue where user PINs were not being imported due to system restrictions. Restrictions have been removed, allowing users to use PINs of varying lengths.
Version 1.2.4 – Hub Update (December 12, 2024)
- Quality of Life Improvements: Various enhancements to improve the usability and performance of the Hub.