---
title: Upload device firmware
description: Upload device firmware
---

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# Upload device firmware

To upload new device firmware to the AltoCommand server:

1. Open the AltoCommand WebUI:
   
   In your browser's address bar, type:
   
   **https://*hostname***
   
   where *hostname* is the fully qualified domain name of the AltoCommand server.
2. Log into the WebUI as a user with admin privileges.
   
   ![AltoCommand login](https://support.altowav.com/hs-fs/hubfs/kb-images/altocommand/login_49b288d7.png?width=218&height=243&name=login_49b288d7.png)
   
   The default username is **admin**
   
   The default password is **admin**

   The AltoCommand WebUI will open to the Dashboard's **Summary** page.
3. From the menu bar, click **Settings**.
4. Click the **Firmware** tab.
5. In the **Firmware** pane, click **Add Firmware**.
   
   ![](https://support.altowav.com/hs-fs/hubfs/kb-images/altocommand/settings-firmware-add-firmware_84e897b9.png?width=362&height=225&name=settings-firmware-add-firmware_84e897b9.png)
6. From the **Download firmware to AltoCommand** dialog, click the **Download** icon (![](https://support.altowav.com/hs-fs/hubfs/kb-images/altocommand/download-icon-grey_aa541149.png?width=16&height=19&name=download-icon-grey_aa541149.png))  next to the appropriate firmware versions.
   
   ![](https://support.altowav.com/hs-fs/hubfs/kb-images/altocommand/settings-firmware-download-firmware_902b94bb.png?width=270&height=384&name=settings-firmware-download-firmware_902b94bb.png)
7. Click **Close** when complete.

### The firmware binary filename

Firmware is downloaded to AltoCommand in zip format. You do not need to unzip the files.

For AltoPlex devices, firmware is listed as **AP4x** or **AP6x**.

- **AP4x** — Firmware used for D423, C410, C420, and P421 devices.
- **AP6x** — Firmware used for D621 and P621 devices.

The firmware binary filename consists of three parts:

\<*filetype*\>-\<*device\_family\_name*\>-\<*version\_number*\>.zip

where:

- *filetype* is **kb\_sw-prod**
- *device\_family\_name* is one of: 
    - **DEVO** — Firmware used for D423, C410, C420, and P421 devices.
    - **NOMAD** — Firmware used for D621 and P621 devices.
- *version\_number* is the version number of the firmware.

For example:

kb\_sw-prod-NOMAD-4.1.0.zip

- [AltoPlex Radios](https://support.altowav.com/altoplex-radios?hsLang=en-us#main-content)

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