> For the complete documentation index, see [llms.txt](https://helpcenter.verifone.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://helpcenter.verifone.com/p400-error-page/sred-not-operational.md).

# SRED Not Operational

{% hint style="danger" %} <mark style="color:$danger;">**THIS IS FOR P400 TERMINALS ONLY**</mark>
{% endhint %}

This issue can be resolved by updating to **v.35\_KEY**. This update enables automatic key renewal, allowing the device to refresh its security key automatically during the maintenance period.

{% hint style="info" %}

* If your P400 terminal is running an older software version, you can still apply the update and upgrade the terminal software at the same time.
* If you wants to keep the same software version - this will still need to be raised as a replacement. Please [Contact Support](https://my.verifone.com/s/supportbyemail) to log a replacement terminal.
  {% endhint %}

**Please follow the steps below to update the terminal:**

{% stepper %}
{% step %}

### **Login To Webcom**

<figure><img src="/files/b4UcZOWSh5xvRHJqv7gp" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### **Navigate To Terminals**

Hover over TMS and select Terminals.

<figure><img src="/files/UhsQrB2aIRlZL5rfuxbY" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### **Filter terminals**

Use the Filter function to locate a terminal. Enter the PTID number and click filter.

<figure><img src="/files/ORTAuHEkJVvzjsaoNqkV" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### **Edit terminal**

Click the pencil icon next to relevant terminals.

<figure><img src="/files/8quq5UYcKToOymocBA4X" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### **Set configuration download**

1. Tick Download Required.
2. Select 'Software Download' as 'Yes'
3. Set Config Download to Mandatory.

<figure><img src="/files/AiwRAJzsiAvn6dSTLdGt" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### **Set Schedule**

Select 'Maintenance Window'.

{% hint style="warning" %}
**This update will not work for 'Next Contact'.**
{% endhint %}

<figure><img src="/files/cB8LngEaf3lBUweJZgJF" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Software Version

Select version '2.10.0.35\_P400\_KEY'

<figure><img src="/files/HII164WqANBDwAzhmdS1" alt=""><figcaption></figcaption></figure>
{% endstep %}

{% step %}

### Update

Press Update to apply the software update.

<figure><img src="/files/o4y5GdxNq29haqm586pU" alt=""><figcaption></figcaption></figure>
{% endstep %}
{% endstepper %}

{% hint style="info" %}
Please ensure the terminals are connected to the network or else they will be unable to pull the update down during the 'Maintenance Window'.&#x20;

The terminal will be operational the following morning after the software update has been applied.
{% endhint %}


---

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