Hopefully someone knows the whereabouts of the wireless configuration.
I would say that if Reach stores your Wifi essid, then you can search for it as a keyword. Maybe ssh into the working unit and do this:
su
cd /etc
grep -r my_essid * # where my_essid is your home network id
If that doesn’t turn up anything, then:
cd /
grep -r my_essid *
…and let me know if you find it.