# GMI file

💾 Typical file size **1–8 GiB**

💽  Media type `application/vnd.sbt.gmi+zip` 

💻 Typical software [Access](https://help.sbtinstruments.com/encyclopedia/software/access)

{% content-ref url="../access/pages/backup-and-restore" %}
[backup-and-restore](https://help.sbtinstruments.com/encyclopedia/software/access/pages/backup-and-restore)
{% endcontent-ref %}

{% hint style="danger" %}

## Only for backup & restore

The structure and content of the GMI file may change without any notice. Don't rely on the GMI for measurement data or the like.
{% endhint %}

## File name

Usually, the file name is something like `backup-of-bb2241039-2026-01-09.gmi`  that includes both the ID if your device (`bb2241039`) and the current date (`2026-01-09`).


---

# 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://help.sbtinstruments.com/encyclopedia/software/file-formats/gmi-file.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.