Please note: if you have an OTT Orpheus Mini unit with high accuracy temperature calibration do only install the firmware update if the previous version is "V 1.53.0" (or higher!).
If you would like to to update an OTT Orpheus Mini with a firmware version wich is lower than "V 1.53.0", please contact the OTT HydroService (Tel.: + 49 831 5617 430 or hydroservice@ott.com).



V 1.53.5 (20.10.2017)

- Various bugfixes (permanently active modem when time slots are overlapping/weekly modem activation on sunday/erroneous interval switching via SMS-info)



V 1.53.4 (19.05.2014)

- Various software optimizations and bugfixes