42 CONTENTS
You can double-check the firmware version. If you wish to cancel the upgrade, it's best to explicitly press 'cancel' in
the form so that the uploaded file could be cleaned up.
When you start an upgrade, a message about this briefly appears on the LCD.
Firmware upgrade start indication
Further activity is indicated by a cycling pattern of signs.
Firmware upgrade progress indication
After an upgrade has been completed, the unit is rebooted. The first boot may take longer than usual due to
configuration updates.
Post-firmware upgrade initialization indication
DLI DIN4 User’s Guide: 20170809T111540Z