I second this. I run an A1 on a separate IoT wifi network that doesn't have outbound connectivity and using nftables rules for forwarding can send prints from my normal network with minimal fuss.
I did have to play around and use orcaslicer to get the printer set up using the network printing and camera feed working.
The one issue I do have is that it seems I would need to connect the printer to a internet enabled Network to get firmware updates, because the firmware version I have is ironically the one before they enabled SD card updating lol.
Back to the original question, I've had this printer for about a month and have been printing virtually non-stop with very minimal complaints. Coming from an ender 3 it is absolutely night and day in terms of ease of setup and general usage.
If the printer is functional, doing what you got it for, what do you need firmware updates for?