# 使用前必读

{% hint style="info" %}
由于X系列X2与X3PRO间的软硬件差异，本章节**X2 API**仅针对**X2眼镜**且搭载**旧版系统runtime**的条件下方可使用，使用前请先检查您当前的硬件及软件配置。
{% endhint %}

## X2 ARDK 下载

| **文件**                                      | **md5**                          | **描述**                      |
| ------------------------------------------- | -------------------------------- | --------------------------- |
| <p>RayNeo OpenXR Unity ARDK\_X2.zip<br></p> | c1e9fd8497e3990d00671a9f4d8d6aee | RayNeo OpenXR ARDK 1.0.1-r3 |
| RayNeo OpenXR Unity Sample\_X2.apk          | 89402857aaf8832c0010a4e05bee52b0 | Sample APK                  |

{% file src="/files/T9bihn1UsotE3SiLHtJp" %}

{% file src="/files/qsfa28BSD1zli22kAbfE" %}

若眼镜系统被修改，或版本太旧，需安装最新runtime.apk 才能正常调用sdk中的能力RayneoRuntime.apk

{% file src="/files/j6JqSPpAwVnQ8kZwovBm" %}


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://rayneo.gitbook.io/rayneo-devdoc/x-xi-lie/unity-kai-fa/x2-api-jiu-ban-sdk-zhi-chi/shi-yong-qian-bi-du.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.