Updated firmware on QU-16 - Couldn't adjust FOH mix in headphones afterwards

Hi Guys
I just updated the firmware on QU-16 to the latest version (Qu16UpdtV1_95_4561) and I THOUGHT everything was OK. I then noticed that while rehearsing that I couldn’t adjust the front of house mix in headphones afterwards. I thought I was going mad for a few minutes as the faders did nothing.

I shut the QU down and restarted then it was OK. (I’ve not used it since mind you)
I just thought I’d post this in case anyone else experiences the same and is confused too.

Note: I don’t know if anything was being adjusted from the actual FOH XLR outputs as I didn’t have any speakers plugged in as we do silent rehearsals with an electronic kit.

Was there anything in PAFL mode?

I’ve no idea I’m afraid. But rebooting sorted it.

Did you reboot after the firmware update?

Yeah, I rebooted after. It was fully switched off and back on again as I moved it to a different location to rehearse.