# Release: Amazon IoT Greengrass Core v2.12.2 software update on February 15, 2024
<a name="greengrass-release-2024-02-15"></a>

This release provides version 2.12.2 of the Greengrass nucleus component and updates to Amazon-provided components.

**Release date:** February 15, 2024

**Topics**
+ [Public component updates](#greengrass-2024-02-15-components)

## Public component updates
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The following table lists components provided by Amazon 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, Amazon IoT Greengrass installs the latest supported versions of all of that component's dependencies. Because of this, new patch versions of Amazon-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 Amazon IoT Greengrass Core software, see [Update the Amazon IoT Greengrass Core software (OTA)](update-greengrass-core-v2.md).


| **Component** | **Details** | 
| --- | --- | 
| Greengrass nucleus | Version 2.12.2 of the [Greengrass nucleus](greengrass-nucleus-component.md) is available.[See the AWS documentation website for more details](http://docs.amazonaws.cn/en_us/greengrass/v2/developerguide/greengrass-release-2024-02-15.html) | 
| Shadow manager | Version 2.3.6 of the [shadow manager component](shadow-manager-component.md) is available.[See the AWS documentation website for more details](http://docs.amazonaws.cn/en_us/greengrass/v2/developerguide/greengrass-release-2024-02-15.html) | 
| Lambda launcher | Version 2.0.13 of the [lambda launcher component](lambda-launcher-component.md) is available.[See the AWS documentation website for more details](http://docs.amazonaws.cn/en_us/greengrass/v2/developerguide/greengrass-release-2024-02-15.html) | 
| Disk spooler | Version 1.0.3 of the [disk spooler component](disk-spooler-component.md) is available.[See the AWS documentation website for more details](http://docs.amazonaws.cn/en_us/greengrass/v2/developerguide/greengrass-release-2024-02-15.html) |