HRV missing

Did it work correctly before the Update?

Did you do a soft reset after installing the update?

Is the OHR recording your HR correctly over night?

Firmware was updated before 4 days ago, I usually update firmware every time I get notification of new firmware available on my fr.

How can I do a software reset?

First sync your watch as usual to not lose any data, then press and hold top left button until screen goes black. Wait some seconds and then power on as usual.

Is the HR reporting normally at night , do you see a HR chart for night time (and other times?)

Mmh...you're right: I only now discovered hr is missing from midnight to 7:00... maybe some setting about power saving?

Ok cool.