My only mistake was not downloading all of the files, but you can access all of the updates by signing up here for $35 - https://techinfo.subaru.com/. You get linked to the TSB. The trick is you have to click the links in Internet Explorer or they won't work. it is very weird. I did the update myself on a USB drive using instructions found online. I used the instructions here:
Mine is a 2016 with NAV - NU9313. I kept the car running (outside of course) and didn't have an issue updating.
Hi,
I signed up and it appears you only have access to the docs, not the actual updates. So don't bother.
Does someone have the following files:
NU9313_USB_1st.exe
NU9313_USB_2nd.exe
Much appreciated if you do!
Best,
Luciano