> For the complete documentation index, see [llms.txt](https://docs.eseye.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.eseye.com/hera604/diagnostics-and-maintenance/restart-and-reset/factory-reset.md).
# Factory reset
Restore the router to factory defaults.
Open **Diagnostics & Maintenance → Restart → Factory reset**, then select **Reset** to return the router to its factory configuration.
{% hint style="warning" %}
A factory reset removes the operational configuration. It can make the router unreachable at its previous address. Download a backup first. Use factory reset only when rebuilding the router or when Eseye Support instructs you to do so.
{% endhint %}
Before you reset the router, confirm that you have:
* An approved configuration backup.
* The initial access details and expected default LAN address.
* The settings needed to rebuild the router.
* On-site or direct local access.
* An approved outage window.
---
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