Tuesday, December 6, 2016

Android 7.1 Nougat on Nexus 7 2012 WiFi

  1. Backup / transfer personal data (texts, photos, videos, apps, etc)

  2. Read [ROM][7.1.0_r5][NDE63U][Grouper|Tilapia][F2FS/EXT4]Android 7.x AOSP by AndDiSa
    • download aosp_grouper-7.1-ota-eng-20161127.ds.zip (219 MB)
    • check MD5 signature (FCIV or a similar tool):
      fciv -add aosp_grouper-7.1-ota-eng-20161127.ds.zip -md5
  3. Install Android SDK / platform-tools

  4. Install TWRP (Team Win Recovery Project) for Nexus 7 2012 Wifi
    (twrp-3.0.2-0-grouper.img, 2016-04-04, 93 MB)

    Follow Fastboot Install Method (No Root Required) section.

  5.  Boot into recovery mode (TWRP) with:
    adb reboot-bootloader
    Use Volume Up or Down keys to select "Recovery Mode", then press "Power".

  6. Now in TWRP, choose Wipe > Swipe to fatory reset

  7. Back to TWRP main screen > Advanced > ADB Sideload > Swipe to Start Sideload

  8. Sideload new ROM from your PC:
    adb sideload aosp_grouper-7.1-ota-eng-20161127.ds.zip
    Total xfer: 1.00x

    Note:  E: unknown error [log] causes or implications are yet unknown, ignoring for now.

  9. Go to Open GApps, choose ARM + Android 7.1  + Pico.
    • download open_gapps-arm-7.1-pico-20161205.zip, 5 December 2016, 121 MB
    • check MD5 signature (FCIV or a similar tool):
      fciv -add aosp_grouper-7.1-ota-eng-20161127.ds.zip -md5
  10. Sideload Open GApps:
    • go back and reselect Sideload option
    • select Wipe Dalvik Cach
    • Swipe to Start Sideload
    adb sideload open_gapps-arm-7.1-pico-20161205.zip
    Total xfer: 1.19x

  11. Reboot (TWRP Main > Reboot > System).


  1. Does it bring something extra vs Cyanogenmod 14 (see https://download.cyanogenmod.org/?device=flo )?

    1. No, this is the basic AOSP build. I'm trying this first cause Nexus 7 (Grouper) was riddled with sluggishness problems since Lolliping when using multiple users.

      If this one works fine, I can try a Cyanogenmod 14 build next. They don't support it, but there is an unofficial build on XDA Developers (http://forum.xda-developers.com/nexus-7/development/rom-cm14-1-nexus-7-2012-t3507001)