Open the “Terminal” app on Mac/Linux, or “PowerShell” on Windows and run this:
ssh [email protected]
It will prompt for a password, enter your Umbrel's password.
sudo ~/umbrel/scripts/update/update --repo getumbrel/umbrel#v0.3.7
It will again prompt for a password, enter your Umbrel's password.
After the update is complete, try logging into your Umbrel in the web browser again.