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.
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