Z-offset issues from update

After owning my C2 for a month I finally put it in Octoprint and had it update. Unknown to me it had updated the z-offset causing the printhead to run into the buildplate (everything seems to be ok minus a gouge in the corner). After a bit of a headache I've reset it via the wizard and eeprom on octoprint and the printer (and checked and rechecked on the gcode that it's at -5.4). So I guess I have a couple questions:

To everyone who's updated are your z-offsets still around -5.4 to -5.6?

And is there a way to have the printer go to the z-offset without starting a print? All the commands I thought would work in octoprint aren't working for me (and I feel like you can do it on the printer I can't remember where)