So I'm late to the party and also in search of the files. I have an Outback and have posed there, but it seems like this forum might prove more fruitful.
I was even able to find the names of files needed on Archive.org, but unfortunately they don't have the actual exe archived.
2015 Outback Premium 7" with NAV
Nor= NU9005
eSD= NU9005
CAN= 14.0012
DB= NU9005
2015MY Legacy & Outback w/ F10 NAVIGATION Update File #1 (NU9017_USB_1st.exe)
2015MY Legacy & Outback w/ F10 NAVIGATION Update File #2 (NU9017_USB_2nd.exe)
Thanks!