MP21Z / MP31Z (800 Series) — Firmware V8.01

Firmware & Drivers
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Firmware for the MP21Z and MP31Z smart plugs (800 Series, 908.42 MHz). This page lists the current release and how to flash it over the air (OTA) from your hub.

1. Current release

Item Value
Version V8.01 (build V08R10P00H08)
Build date 2023-10-09
Applies to MP21Z (ZW36S), MP31Z (ZW36M) — 800 Series
Does NOT apply to MP21Z / MP31Z 700 Series units

One file serves both models.

2. Should you update?

Check your current firmware version first (Hubitat: device page; Home Assistant: Z-Wave JS device page). If your devices are working fine you don’t have to rush, but we recommend staying current: newer builds fix reported issues and improve network stability.

3. How to update (OTA)

Hubitat Elevation

  1. Open the device page and click Firmware (Device Firmware Updater).
  2. Select the downloaded .gbl file and start the update.
  3. Do not unplug the device during the transfer (typically 2 to 5 minutes).

Home Assistant (Z-Wave JS / Z-Wave JS UI)

  1. Open the device page and expand Firmware update (OTA).
  2. Upload the .gbl file and confirm.
  3. Leave the device powered for the whole transfer.

Other controllers

Any Z-Wave controller with OTA support (Z-Wave JS UI standalone, Zooz Z-Station / Silicon Labs PC Controller) can flash the same .gbl file.

SmartThings does not support third-party Z-Wave OTA updates. If your device shows issues this build addresses, contact ask@minoston.com.

4. If something goes wrong

  • Update stalls: leave the device powered; large transfers can take a few minutes.
  • Version unchanged after update: run the update once more.
  • Device unresponsive: unplug for 10 seconds, plug back in, and re-run the update. If it still won’t respond, exclude and re-include it.
  • Still stuck: email ask@minoston.com with your hub type and the firmware version shown before the update.

5. Download

MP21Z_MP31Z_800_V8.01.gbl (136,932 bytes)

  • File: MP21Z_MP31Z_800_V8.01.gbl
  • Size: 136,932 bytes
  • SHA-256: d84da57738c7b522a72a8a4c4040b1fd818348c5fa6eb1d309e775b76a07c751
    Official source: minoston.com/pages/firmware-driver

Questions? Reply below or email ask@minoston.com.

Firmware Index — All Minoston Devices