1. Sign up for the Android beta programme: g.co/androidbeta
2. Enroll your Nexus
3. Unenroll after you have been updated to Android 7
Make sure you are actually on Android 7 before unenrolling. Going out of a regular beta will wipe your phone!
Cheers
Edit: Copy/Paste sandGorgon’s warning from below.
Warning : make sure you are actually on Android 7 before unenrolling. Going out of a regular beta will wipe your phone.
It looks like the 6P image is available: http://www.androidpolice.com/2016/08/22/flash-all-the-things...
Download it to your device, and either flash it in TWRP or use adb sideload. Note that if you've modified your /system, you'll need to reflash that partition with the stock image first (there are guides on XDA).
1. Sign up for the Android beta programme: g.co/androidbeta
2. Enroll your Nexus
3. Unenroll after you have been updated to Android 7
Make sure you are actually on Android 7 before unenrolling. Going out of a regular beta will wipe your phone!
Cheers
Edit: Copy/Paste sandGorgon’s warning from below.