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March 2026

Export Device Vitals​

Device Vitals columns are now included in device CSV exports.

You can also export data directly from a single device's detail page, making it easier to pull a single device's history for offline analysis or sharing with hardware teams.

Exporting device vitals from the Device Detail page

Trace Count Grouped by Software Version​

Issue Chart: Trace Count Over Time cards now support a "Software Version" group-by option, letting you see trace volume broken down by the versions of software running across your fleet. This makes it easy to confirm whether a bug affects a specific release or spans multiple versions.

Issue chart grouped by software version

General​

  • Device Vitals columns are now included in CSV device exports, and a single device's data can be exported directly from the Device Detail page.
  • Issue Chart cards now support grouping by Software Version, making it easy to see trace distribution across releases.
  • The Upload Traces modal now correctly detects and handles MAR files in addition to ZIPs.
  • For nRF Cloud customers, account registration, user invites, and team permissions are now managed in app.memfault.com.

Device SDK Updates​

MCU: [1.37.1] - 2026-03-24, [1.37.0] - 2026-03-23, and [1.36.0] - 2026-03-11​

See the full MCU SDK changelog.

  • Added a Memfault MCUmgr command group for Zephyr, enabling FOTA via MCUmgr (SMP over BLE) without a secondary interface
  • Improved nRF Cloud CoAP: data now uploads directly to the /chunks endpoint without requiring CONFIG_MEMFAULT_HTTP_ENABLE, and supports automatic project routing via Project Key
  • Refactored Zephyr HTTP client to use native zsock_ socket functions, removing the POSIX API compatibility layer requirement
  • Added optional watchdog interrupt return behavior via MEMFAULT_FAULT_HANDLER_WATCHDOG_RETURN, and ESP-IDF v6 compatibility

Android: [v5.8.0] - 2026-03-26 and [v5.7.0] - 2026-03-10​

See the full Android SDK changelog.

  • Added support for Android 16
  • Added uptime and boot_id to metrics and reports, with optional uptime-based timestamp adjustment for more accurate metric aggregation across reboots
  • Added Bluetooth disconnect metrics (bluetooth.disconnect, bluetooth.disconnect_reason, bluetooth.disconnects) collected via statsd
  • Fixed battery metrics over-writing on unchanged values (reducing up to ~500 MB/day of unnecessary storage) and fixed diskstats bytes-written being over-reported by 8×

Linux

[1.26.1] - 2026-03-26 and [1.26.0] - 2026-03-06​

See the full Linux SDK changelog.

  • Added automatic sysfs battery metrics when a battery node is present, plus a new battery_soh_pct State of Health metric, with no extra configuration needed
  • Log filter configuration can now be pushed from the server via device config, allowing log verbosity to be adjusted remotely without changing on-device settings
  • Added min/max tracking option for individual metric keys alongside averages
  • Fixed a crash in journald log collection when encountering empty or malformed cursor files

SDK: [1.8.0] - 2026-03-06​

See the full CLI changelog.

  • Add the --org-token option for authenticating with an Organization Auth Token (OAT). This is now the recommended way to pass OATs to the CLI. Previously, the documented approach was to pass the OAT via --password:

    memfault --password "$ORGANIZATION_AUTH_TOKEN" ...

    This should now be updated to use --org-token:

    memfault --org-token "$ORGANIZATION_AUTH_TOKEN" ...

    Passing an OAT via --password is deprecated and will be removed in a future release.

  • Update virtualenv dependency to >=20.36.1 to address this security disclosure.