I have received my new RAK5205 tracker with its solar enclosure.
The tracker says the it is running “RAK5205 BreakBoard software version: 1.1.16 r120”
What is this firmware? Where is the source code?
The github repository says that the latest firmware is 2.x.0.6.
Is the 1.1.16 r120 a new branch or an old version? Should I upgrade the firmware?