# Release: AWS IoT Greengrass Core v2.8.0 software update on October 7, 2022
<a name="greengrass-release-2022-10-07"></a>

This release provides version 2.8.0 of the Greengrass nucleus component and version 1.1.0 of the MQTT 5 broker (EMQX) component.

**Release date:** October 7, 2022

**Release highlights**
+ **Deployment error codes** – The Greengrass nucleus now reports a [deployment health status](deployment-health-notifications.md) response that includes detailed error codes when a component deployment can't be completed. For more information, see [Detailed deployment error codes](troubleshooting-deployment.md).
+ **Component error statuses** – The Greengrass nucleus now reports a [component health status](deployment-health-notifications.md) response that includes detailed error statuses when a component enters the `BROKEN` or `ERRORED` state. For more information, see [Detailed component status codes](troubleshooting-component.md).

**Topics**
+ [Public component updates](#greengrass-2022-10-07-components)

## Public component updates
<a name="greengrass-2022-10-07-components"></a>

The following table lists AWS-provided components that include new and updated features.

**Important**  <a name="component-patch-update-note"></a>
<a name="component-patch-update"></a>When you deploy a component, AWS IoT Greengrass installs the latest supported versions of all of that component's dependencies. Because of this, new patch versions of AWS-provided public components might be automatically deployed to your core devices if you add new devices to a thing group, or you update the deployment that targets those devices. Some automatic updates, such as a nucleus update, can cause your devices to restart unexpectedly.   
<a name="component-version-pinning"></a>To prevent unintended updates for a component that is running on your device, we recommend that you directly include your preferred version of that component when you [create a deployment](create-deployments.md). For more information about update behavior for AWS IoT Greengrass Core software, see [Update the AWS IoT Greengrass Core software (OTA)](update-greengrass-core-v2.md).


| **Component** | **Details** | 
| --- | --- | 
| Greengrass nucleus | Version 2.8.0 of the [Greengrass nucleus](greengrass-nucleus-component.md) is available.<a name="changelog-nucleus-2.8.0"></a>**New features**<br />   Updates the Greengrass nucleus to report a [deployment health status](deployment-health-notifications.md) response that includes detailed error codes when there is a problem deploying components to a core device. For more information, see [Detailed deployment error codes](troubleshooting-deployment.md).   Updates the Greengrass nucleus to report a [component health status](deployment-health-notifications.md) response that includes detailed error codes when a component enters the `BROKEN` or `ERRORED` state. For more information, see [Detailed component status codes](troubleshooting-component.md).   Expands status message fields to improve cloud availability information for devices.   Improves fleet status service robustness.   <br />**Bug fixes and improvements**<br />   Allows a broken component to reinstall when its configuration changes.   Fixes an issue where a nucleus restart during bootstrap deployment causes a deployment to fail.   Fixes an issue in Windows where installation fails when a root path contains spaces.   Fixes an issue where a component shut down during a deployment uses the shutdown script of the new version.   Various shutdown improvements.   Additional minor fixes and improvements.    | 
| MQTT 5 broker (EMQX) | Version 1.1.0 of the [MQTT 5 broker (EMQX)](mqtt-broker-emqx-component.md) component is available.<a name="changelog-emqx-1.1.0"></a>**New features**<br />   Adds support for EMQX configurations including broker options and plug-ins.   <br />**Bug fixes and improvements**<br />   Updates EMQX to version 4.4.9.    |