> For the complete documentation index, see [llms.txt](https://release-notes.fotokite.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://release-notes.fotokite.com/fotokite-sigma-release-notes-v66-maintenance.md).

# Fotokite Sigma Release Notes v66 (Maintenance)

## System

<table><thead><tr><th width="362"></th><th>Version</th></tr></thead><tbody><tr><td>Fotokite Live</td><td>Windows: 3.6.6<br>Android: 3.6.5<br>iOS: 3.6.5</td></tr><tr><td>Fotokite System</td><td>Production v66<br>Axon-Production v31</td></tr></tbody></table>

## **Maintenance Release** <a href="#maintenance-release" id="maintenance-release"></a>

This software release fixes bugs, improves system security, and expands hardware compatibility.

Fixes include:

* An issue in a critical flight component