Xylem TitroLine 7800 Mode D'emploi page 277

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After starting the update using <ENTER>/<OK>, next thing to appear is the following graphic (Fig. 304),
Fig. 304
which will change after a few seconds to the following display (Fig. 305).
Fig. 305
Upon completion of the update (approx. 4 - 5 minutes), the device will shut down the software completely and
proceed to a new start.
In the course of an update, the methods will not be deleted! You can continue to use them.
If no valid update file is stored on the USB stick, a message will appear (Fig. 306)
Fig. 306