Find an way to flash roost sensors

I found out on the fcc internal photos for the 9v battery it uses the ATWINC 1500b chip, I currently have one that is not being used.

It would be nice if someone can help find a way to flash the roost sensors

it seems to use a board that roost itself makes it is called Roost RSW200A

it seems the fcc id is for the wifi board, and the wifi board is in the top cover


Here is the top photo from the fcc website