Updating Firmware using WiFi

[ClementDecaux]

Is it possible do to an update using WiFi on the LoPy4? I haven't any expansion board and until now I was working with FTP.

[jcaron]

@clementdecaux You need the appimg.bin and upload it to /flash/sys.

[ClementDecaux]

This post is deleted!

[ClementDecaux]

@jcaron

Is that what you are talking about ?

https://github.com/pycom/pycom-micropython-sigfox/releases

I have no idea where I can find this binary. And just to be sure we are talking about the same thing : I want to use Sigfox library which seems not to be included in the LoPy4 --> "cannot import name Sigfox". I found a topic where they were saying Sigfox module is now included in new public firmwares.

[Xykon]

@clementdecaux You need to use the firmware updater (which requires a serial connection) in order to activate your device for the Sigfox network. If you don't have an Expansion Board or shield, you can use a USB UART adapter. See https://docs.pycom.io/chapter/gettingstarted/connection/lopy4.html for more details.

[ClementDecaux]

@xykon Actually my LoPy4 appears as an unknown device on my device manager. I cut a USB-micro USB wire and I connected USB 4 wires to my LoPy4. I checked tx and rx voltage (tx : ~1.3v, rx : ~3.3V). As my device is unknown i don't have any access.

[Xykon]

@clementdecaux The LoPy4 doesn't support USB. Please check the link I posted earlier.

[jcaron]

@clementdecaux Not only is there no USB support directly on the LoPy (I guess you connected to the UART lines), but additionally USB is 5V while the LoPy only supports 3.3V...