If upgrading via the usual methods fails, you can upgrade your Dream Machine via SSH or the Recovery user interface.
- Upgrade firmware with SSH:
- Download the most recent stable firmware for your UDM (here) or UDM-Pro (here).
- Follow the steps in this guide to update your firmware.
- Upgrade firmware with Recovery UI:
- Download the most recent stable firmware for your UDM (here) or UDM-Pro (here).
- Follow the recovery UI update steps: https://udm.ui.com/recovery.