Fusion/Updates (OTA)/en

Dies ist die englische Fassung. Zur deutschen Fassung

The device updates itself over Wi-Fi (OTA, "over the air") without a USB cable. The new firmware is downloaded from GitHub Pages.

Automatic check and update icon

Two minutes after start and then every 6 hours the device checks whether a newer version has been released (after an error it retries after 1 hour).
If there is one, an orange update icon appears at the top left of the main screen. It stays until the update has been installed.
Version numbers are compared: an older or identical published version triggers nothing.

Installing an update

On the display: tap the icon, check the versions, choose "Jetzt installieren" (install now). "Später" (later) closes the window.
Via browser: web interface → Firmware-Update → "Auf Updates prüfen" → "Jetzt installieren".
During installation the display shows a progress bar. Do not disconnect the device from power; it restarts by itself afterwards (about 1 minute).
The picture keeps running calmly during the update (flash-safe display driver); the display shows a progress bar.
If the update fails (e.g. no internet), the display briefly shows the error and the device keeps running the old version.

Settings and Wi-Fi data are kept across an update.

Firmware from a file and rollback

In the web interface (tab System) a firmware.bin can be uploaded, for example for a test version or when the update check finds nothing. The file is checked before writing.
Every new firmware first runs on probation: only after 60 seconds of healthy operation it counts as valid. If it does not start or the power is pulled, the previous version runs automatically after the next restart ("Update zurückgenommen"). More in Recovery.

Notes

After a release, GitHub Pages sometimes needs a few minutes to serve the new firmware. On a download error, wait a moment and try again.
The device only offers newer versions. Going back to an older version requires publishing a new, higher version containing the old state.

Emergency: reinstall the firmware via USB

If the device no longer starts at all (e.g. because it was disconnected from power during an update), the firmware can be reinstalled via USB with the web installer again. The installation erases the flash, including settings and Wi-Fi data.