Well there is my public repo currently on GitHub. But be warned it's a mess and flags like a noob at Christmas
It is, openwrt installation is a PITA though, read the device specific wiki page.
I'm not sure what PITA stands for but that does look like a mission to install
It takes a little while, since it has to be done in two steps, and you need to make sure the fw_setenv commands are correct, or you'll end up doing s serial recovery.
Which in itself can be a even bigger PITA, if you let the device update itself over internet, since it'll disable serial console output.
Input still works, but you'll have to perform the steps blind.
Thank you for your work on the devices, I have now decided to buy an AXT1800
Your call, I still don't understand what people see in those devices, except for size.
For a non-technical operator, especially one who travels a lot, they can be quite attractive. Small size/weight, the ability to receive power via USB (as in, from a computer), the ability to tether to a smart phone as an external modem, the pre-configured feature aimed at dealing with hotels charging for Wi-Fi access per device, etc.