近期，谷歌更新了Android Auto認證PDK 4.1的適用日期，原文翻譯如下：

為了確保Android Auto用戶獲得一致且可靠的體驗，Google要求所有經過Android Auto認證的主機 (HU) 滿足一組特定要求。

本指南提供了認證Android Auto主機 (HU) 所需的操作。該指南分為以下部分：

· 確定接收器庫版本；

· 確定PDK組件版本；

· 確定認證模板并為Android Auto認證您的HU；

·Google致力于不斷提高Android Auto的質量和用戶體驗。作為這一承諾的一部分，Google定期發布新版本的AAP接收器庫，其中包含新功能和改進，使Android Auto更加強大和通用。 

為確保用戶獲得最新的Android Auto功能和最佳體驗，Google強烈建議合作伙伴在發布后12個月內升級到最新的 Receiver Library版本。此外，合作伙伴不得在GreenLight提交時的生命周期終止(EOL) 日期之后使用不受支持的接收器庫版本，除非獲得Google的書面批準。

通過升級到最新的Receiver Library版本，合作伙伴可以幫助確保其用戶獲得可靠的Android Auto體驗。

下表列出了Google目前支持的接收器庫版本：

確定PDK組件版本

從PDK4.2開始，Google繼續發布不同PDK組件（PCTS、HUIG、協議規范、GALMonitor）的新版本以及最新的接收器庫。此外，Google將開始維護較舊的PDK資源（如果適用），以供正在認證與舊版接收器庫版本集成的HU的合作伙伴使用。 

這意味著PDK組件現在與Google支持的接收器庫版本兼容，確保合作伙伴始終可以使用合規的工具和文檔來認證其主機 (HU)。 

為了確保合規性和順利認證，合作伙伴必須確保PDK組件的版本與正在認證的主機的接收器庫版本兼容。有關使用哪些版本的更多詳細信息，請參閱下面的PDK兼容性表：

 谷歌原文參考如下：

EOL date of 4.1 is postponed
To ensure that Android Auto users have a consistent and reliable experience, Google requires that all head units (HUs) that are certified for Android Auto meet a set of specific requirements. 

This guide provides the actions needed to certify a head unit (HU) for Android Auto. The guide is divided into the following sections:

· Determine the Receiver Library version

· Determine the PDK components versions

· Determine the certification templates and certifying your HU for Android Auto

Google is committed to continually improving the quality and user experience of Android Auto. As part of this commitment, Google regularly releases new versions of the AAP Receiver Library, which contain new features and improvements that make Android Auto even more powerful and versatile.

To ensure that users receive the latest Android Auto features and the best possible experience, Google strongly recommends that partners upgrade to the latest Receiver Library version no later than 12 months after the release becomes available. In addition, partners MUST NOT use unsupported Receiver Library versions beyond their end-of-life (EOL) date at GreenLight submission unless they receive written approval from Google.

By upgrading to the latest Receiver Library version, partners can help to ensure that their users have a reliable experience with Android Auto.

The table below lists the Receiver Library versions that Google currently supports:

Determine the PDK components

 versions

Starting PDK 4.2, Google continues to release new versions of the different PDK components (PCTS, HUIG, Protocol specification, GALMonitor) in conjunction with the latest Receiver Library. In addition, Google will start maintaining older PDK resources, when applicable, to be used by partners who are certifying HUs that are integrated with legacy Receiver Library versions.

This means that the PDK components are now compatible with Google supported Receiver Library versions, ensuring that partners can always use compliant tools and documentation to certify their head units (HUs).

To ensure compliance and smooth certification, partners must ensure that the versions of the PDK components are compatible with the Receiver Library version of the head unit undergoing certification. For more details on which versions to use, please refer to the PDK compatibility table below:

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