Lora-Mac=‎FFFFFFFFFFFFFFFF

[Xykon]

The Lora MAC is actually stored in flash memory. You can set it by uploading an 8 byte binary file containing your MAC address as /flash/sys/lpwan.mac (see github source)

Try running the following code directly on your LoPy to generate the file (make sure to use a unique MAC address):

fo = open("/flash/sys/lpwan.mac", "wb")
mac_write=bytes([0x01,0xb1,0xd1,0x41,0x91,0x31,0xb1,0xb4])
fo.write(mac_write)
fo.close()

Then reset your LoPy... you should see the following message during boot on the serial console: LPWAN MAC write OK

Let me know if this works for you

[emerout]

@Xykon That's work !! :-) thanks a lot

[cinezaster]

@Xykon Thanks

[Colateral]

@daniel For a custom firmware is always FFFFFFFFFFFF. There is some build parameter to get the mac as you have for official firmware? How we can set up the mac?

[KenM]

My lora mac ID changed after [v1.20.0.rc13] Release Candidate firmware update of my Lopy4?
I used the code above to change it back to the original mac ID.

I also did the firmware udpate on another Lopy4 but I didn't notice a connecton problem there.

[jg_spitfire]

@Xykon Hi, how could I make sure I am using an unique MAC?, thanks