> For the complete documentation index, see [llms.txt](https://developer.magtek.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.magtek.com/hardware/card-readers/mms-dyna-devices/dynaflex-ii-go/documentation/user-manuals/installation-and-operation-manual/maintenance.md).

# Maintenance

## Mechanical Maintenance

{% hint style="warning" %}
DO NOT use liquid cleaning products or insert any other objects into the device.

DO NOT apply any liquid directly onto the device, to avoid seepage into the electronics.
{% endhint %}

Periodic cleaning of the device’s exterior may be required. To clean the outside of DynaFlex II Go products, wipe down the device with a soft, slightly damp cloth and then wipe dry with a lint-free cloth. The graphic overlay on the face of the device can also be cleaned using a slightly damp specialty cleaning cloth, like those used to wipe lenses, monitors, and smartphone displays.

## Updates to Firmware, Documentation, Security Guidance <a href="#id-8.2_updates_to_firmware-_documentation" id="id-8.2_updates_to_firmware-_documentation"></a>

In addition to the security guidance in the product manuals, MagTek may provide updates to this document, as well as supplemental security guidance or notices regarding vulnerabilities, at [www.magtek.com.](http://www.magtek.com/) MagTek advises checking the product’s home page periodically for the most up-to-date information.

Any firmware updates addressing product features, bugs, or security vulnerabilities are also posted to [www.magtek.com](http://www.magtek.com/) or may be sent directly to affected customers. To update the device’s firmware:

* Obtain the firmware image to install from your MagTek representative.
* Download *1000007406 DynaFlex, DynaProx Test Utility* from the MagTek web site.
* Follow the instructions in *D998200402 DynaFlex, DynaProx Utility User Manual (Windows)* included in the firmware update utility’s Docs subfolder.


---

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