Firmware is updated using a 32GB SD card containing the receiver firmware. Ensure the receiver has a reliable source of power and take care not to interrupt the upgrade process. Upgrading is done offline (no internet connection required) and takes about 15 minutes to complete. See the firmware upgrade manual “Receiver Firmware upgrade (DAA23)” available from the Phoenix website downloads page at http://phxgeo.ca/releases/v2.45.0/Manuals/.
Firmware is available from the Phoenix website support page https://www.phoenixgeophysics.com/downloads-support.