Open Source firmware for the 8720DN / field updates?

Products & Technology Wio Terminal
#1

does fully open source really mean that the firmware inside the Realtek RTL8720DN is open too? ( can the 8720DN firmware be updated in the field without opening the case ? )

#2

Yes, all source code is here.

https://wiki.seeedstudio.com/Wio-Terminal-Network-Overview/