> For the complete documentation index, see [llms.txt](https://docs.senstream.com/senstream-researcher-ring-application-user-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.senstream.com/senstream-researcher-ring-application-user-guide/charts-web-app/view-firmware.md).

# View Firmware

Selecting Firmware in the top navigation, you will be able to see which different versions of firmware on Research Rings have been used to record data in the system.

Firmware on a ring is [updated using the iOS app](/senstream-researcher-ring-application-user-guide/senstream-research-ring/update-firmware.md).

<figure><img src="/files/cb7Z1SJrRHyJ84BI3Z7Z" alt=""><figcaption></figcaption></figure>