Volume very low after upgrade to latest firmware Hegel H190

I upgraded my H190 to have it Roon ready. Check!
Problem now is that on volume as usual (between 20 and 40) there is hardly any sound now. At 80 I get background volume…
Anyone else had this problem?
Anyone know how to may be reinstall the firmeware?

Issue solved!
Had the fastest ever reply from Hegel support. Fix is to do a factory reset.
All working as a charm now! :grin: