I have the innovator edition Gear VR (SM-R320), and I just got my old Note 4 replaced with a refurbished one running Android 60101. I plugged it into the headset, it started the setup, I pulled the phone off and installed all the VR apps, logged into the Oculus store, no problems.
Now when I mount the phone back on the headset it says -
Oculus Update Required
To update take your phone out of the headset and open the Oculus App.
You will need internet access to continue.
I unplug, start the app, updates are set to auto in the Oculus app settings, tried manually updating, said it was already updated. Still getting the same message. I reset the entire phone and tried again with the same results.
Reset the phone to factory settings twice now with the exact same result.
Downloaded and installed the com.samsung.android.app.vrsetupwizard_2.2.13-221301000_minAPI21(nodpi)_apkmirror.com.apk file from Samsung and had the exact same result.
There is a new version of the Oculus app, and it seems to fix the problem, if you open the app with your phone undocked it should find 4 updates.
New version is 220.127.116.11.3473 (103876948)