Update

Go to Settings → Check updates. If a newer version exists, confirm it — the plugin downloads and swaps itself in place, without a permission prompt and without restarting TouchDesigner.

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CHECK UPDATES AUTOMATICALLY ON TD START:
UPDATES NEED A CURRENT TOUCHDESIGNER
WHEN AN UPDATE ASKS FOR PERMISSION
IF AN UPDATE DIDN'T APPLY

CHECK UPDATES AUTOMATICALLY ON TD START:

Settings → Auto update → Yes. It is off by default; when on, an update found at start installs without asking.

UPDATES NEED A CURRENT TOUCHDESIGNER

Each plugin release is built on one TouchDesigner build (2025.33230 right now), and Check updates only offers releases built on your build or an older one. On an older TouchDesigner it keeps saying you are up to date. Update TouchDesigner and install twozero again to get the current plugin.

WHEN AN UPDATE ASKS FOR PERMISSION

Most updates only replace the plugin file in your user folder, so nothing is asked. The full installer opens (with one permission prompt — why?) in two cases:

the update also changes the small loader component that lives in the TD interface;
you are coming from an older twozero that predates the loader — the installer migrates you once, and later updates are prompt-free.

In both cases the flow is the same as a normal installation: the installer screen appears, you click GET STARTED. The installer runs inside your open project, so TouchDesigner briefly opens a second window to finish, as when you drop the .tox into an open project.

IF AN UPDATE DIDN'T APPLY

Settings → Reload plugin reloads the installed plugin from disk. Restarting TouchDesigner does the same. If the plugin is missing entirely, run the installation again — settings and your local folder are preserved.

A new TouchDesigner build always needs a fresh installation: the plugin is stored per TD build.