> For the complete documentation index, see [llms.txt](https://documentation.hak5.org/packet-squirrel/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://documentation.hak5.org/packet-squirrel/software-updates/manual-upgrade.md).

# Manual Upgrade

Packet Squirrel firmware may be updated via USB as described in the [updating firmware article](https://docs.hak5.org/hc/en-us/articles/360010470374). That said, it is also possible to manually upgrade the firmware by following this process:

1. Download the latest UPDATE file from <https://downloads.hak5.org/squirrel> and verify its checksum.
2. Power on the Packet Squirrel in Arming Mode
3. Manually SCP the file to the Packet Squirrel's /tmp directory (e.g. `scp upgrade-3.1.bin root@172.16.32.1:/tmp/`)
4. SSH into the Packet Squirrel (e.g. `ssh root@172.16.32.1`)
5. From the Packet Squirrel's bash prompt, issue the sysupgrade command relevant to your firmware update file (e.g. `sysupgrade -n /tmp/upgrade-3.1.bin`)
6. Wait 5-10 minutes as the Packet Squirrel flashes the firmware and reboots.

{% hint style="danger" %}
DO NOT unplug the device during the process as doing so will render the device inoperable.
{% endhint %}