I found out that Dell doesn't make the firmware user upgradeable when I checked for any for my AW3420DW. The annoyance I'm trying to fix is minor enough that I

I found out that Dell doesn't make the firmware user upgradeable when I checked for any for my AW3420DW. The annoyance I'm trying to fix is minor enough that I decided it's not worth RMAing it to hope I get one that is both in good condition and has the new firmware. I'll have to be pretty desperate to buy a monitor from Dell again though.