Q: Which firmware should i use for itracker module?
Fomi: We recommand you to use RUI for your itracker module. RUI is an Unified Interface for IoT modules, and it can be used on all of RAK itracker modules. RUI is based on FreeRTOS now, and in the future, RAK will release other versions which are based mbed, Zephyr, AliOS and so on. RUI is fully open source, and you can find its source code on Github:
BTW, you can also use other firmware for itracker modules, for example, Espruino, you can find it on Espruino official website by searching RAK8212 or RAK8211, but if you have some problems about Espruino, you need to ask in Espruino official forum too.
Q: How can i use RUI?
Fomi: Please check the tutorial about how to use RUI for your itracker module here: