If you know the serial number
It is printed on the label. Every radio answers to its own name, so there is nothing to download — type the serial and go straight to it.
Opens http://CXA-<serial>.local/. Works on macOS,
Windows 10 or later, and Linux. If nothing loads, use the finder
below.
If you don't know the serial number
The finder app searches your local network for cellXica radios and lists address of each.
Run it and your browser opens on the list. Each radio is a link.
The Linux app needs marking the binary executable first
(chmod +x cx-find-radios-linux-x86_64), as anything
downloaded there does.
If nothing is found
The radio and the computer have to be on the same network. A guest network, or a wireless network that keeps its clients apart, will not carry the announcements, and some company networks block multicast altogether. A radio also needs a minute after being powered on. Where none of that can be changed, ask whoever runs the network for the address the radio was given.