Updates are delivered OTA directly from the Lanternfish built-in web interface, with no PC software needed.
Firmware update
Current firmware version: checking…
Download the firmware package below.
Open the Lanternfish web interface in your browser: select CONFIG on the device, connect to its access point and go to http://192.168.4.1—or use its address on your own network if you have enabled Wi-Fi STA.
In the settings, under Miscellaneous, use the firmware update option and upload the package. The same section shows the version currently installed on the unit.