Installing Maia SDR
Plug the ADALM-Pluto into the computer.
Download the latest release from the Maia SDR releases page
pluto.frm file to the PlutoSDR drive.
Eject the PlutoSDR drive.
The Pluto will blink for a few minutes. When blinking is done, Maia SDR is installed. It will show up as a drive on the computer again.
Once Maia is loaded, a few environment variables need to be set. This can be done using the ADALM-Pluto Setup Utility. This requires a browser that supports the WebSerial API, like Chrome or Edge.
Once connected, the tool checks and guides through setting these variables.
By default, the Pluto ships with RNDIS USB connection mode. Use the utility to set it to CDC-NCM so it can communicate with iOS devices.
The settings are applied after the next reboot. Connect the device to your phone and open up Spectrum.