Does this address the Z15 randomly not starting up with the system? All other USB devices work fine on boot, except the keyboard. I have to manually unplug it and plug it in about 2/5 boots.

Audio wheel problem on my Z15 (going all the way to 100% or 0% upon doing any adjustment) persists just like in the previous firmware version.
On windows happens occasionally, on Linux (Pop!_OS 22.04) constantly. Also when the problem occurs i just need to press any key for the keyboard to stop spamming the volume command, but on the window currently focused I'm not able to type anything until I Alt+tab or minimize it.
 

Confirmed here as well -- The Z15 runaway volume wheel issue is still not fixed in this version. :-(
 

Volume wheel on my Z15 is still wonky!

What about the random disconnects with the Z20 keyboard? everyday my Z20 disconnects and I need to reseat the USB cable to fix it

Also having problem of keyboard not being recognized about 50% of the time when I start the computer. I have to unplug it and plug it back in. I also try to tap the keys when I start the computer to "help", but I'm not sure if it actually helps. Has there been any acknowledgement of this problem by EVGA?

My main issue with the Z20 is the RGB does not stay to what I set it to.
And then randomly lights up half the keyboard in purple and blue.
 

Eric_K
I had to re-map my scroll lock and pause/break buttons to control volume until they fix it. 

Huh... well dang. I wish I'd thought of that. I'll actually remap the forward/rewind media keys instead but that's a great idea for now until the wheel is fixed. 
 
Thanks.

Got my RMA Z15 Mouse and finally no wheel issues no more, Now firmware and Unleash updated mouse being working fine. Thanks for RMA EVGA. 

Agreed - EVGA, please confirm if you've at least identified the issue. It's a huge bug that came from recent updates and has potential to blow peoples ear drums out.

I am also having the volume wheel problem going all the way to 100% or 0% on the z15 keyboard. Many people on reddit are also having the same problem. 

Based on this situation in general, I'm thinking it might be time to dump the Z15 and move on to something else.  Aside from these recent volume wheel issues, I am not finding the hot swap to be very robust with lots of movement in the switches and intermittent double presses on some keys regardless of swapping out the switch with new ones.
 
Anyone have suggestions for a decent full-sized hot-swap keyboard with a built-in volume wheel?  I haven't seen many out there.  It seems everything it TKL, which is very frustrating for those of us who still use a numpad on a daily basis.
 
Edit:  After posting about my double press issue above, I decided to repair the keys giving me problems.  I opened the keyboard just now and discovered that the hot swap mounts are only soldered to one side of the PCB.  The other side is glued on with some sort of adhesive.  If this glue breaks free, the hotswap mount will move around slightly and eventually the small trace that goes to the diode will fatigue and go intermittent or fail completely.  The cause was the same for both of my intermittent keys.  To fix, I scraped the conformal coating off the broken end of each loose trace and then rejoined it to its diode with fresh solder.  It's now working again without issue.  Keep this in mind if you run into similar problems with your Z15.