How to change Lora band from 868 to 915 MHz and back?

[bmarkus]

I have a LoPy with the latest firmware used on 868MHz. Now I need testing a 915MHz system. How can I change band?

[jmarcelino]

@bmarkus
Version has been updated, change to 1.7.4.b1 and not 1.7.3.b3

The download should work then

[bmarkus]

@jmarcelino said in How to change Lora band from 868 to 915 MHz and back?:

I haven't tried but I think you can also manually download the 915Mhz firmware, the latest is at

https://software.pycom.io/downloads/LoPy_915-1.7.3.b3.tar.gz

and then flash it using the downgrade instructions, i.e. extract/look inside the Pycom Updater app (depends on your OS) for bin/updater.py and do

python updater.py -t LoPy_915-1.7.3.b3.tar.gz -p YOUR_SERIAL_PORT -s 921600 flash

to revert to 868 should be the same but with

https://software.pycom.io/downloads/LoPy_868-1.7.3.b3.tar.gz

Download links doesn't work in browser, I get Unauthorized status. It requires some kind of authorization. Is it built into the updater?

[jmarcelino]

@bmarkus
You can download the respective firmware images without an ESP32 build environment, see my second answer

ps the version should now be 1.7.4.b1 and not 1.7.3.b3

[bmarkus]

@jmarcelino

Thanks for advice but I do not want to install a development environment for ESP32 and make my own fw just to change frequency. Maybe it will be necessary for other reasons once.

[EasyRider]

This post is deleted!

[jmarcelino]

I haven't tried but I think you can also manually download the 915Mhz firmware, the latest is at

https://software.pycom.io/downloads/LoPy_915-1.7.3.b3.tar.gz

and then flash it using the downgrade instructions, i.e. extract/look inside the Pycom Updater app (depends on your OS) for bin/updater.py and do

python updater.py -t LoPy_915-1.7.3.b3.tar.gz -p YOUR_SERIAL_PORT -s 921600 flash

to revert to 868 should be the same but with

https://software.pycom.io/downloads/LoPy_868-1.7.3.b3.tar.gz

[jmarcelino]

@bmarkus
You can either build and flash a custom firmware image or request that Pycom change the country information on record - on their update servers - for your board ( you send them the MAC address IIRC)