After the problem I had on my Nexus 7 and the wipe data test, my tables was always locked on the boot image.
So, the second thing (and I think the last one too) I could test, was a complete reinstallation of the rom.
Before going ahead, you need a computer with the Android SDK installed and the platform-tool folder in the class path of your machine (means you can run, for example, fast boot from everywhere).
- Download the factory image for your nexus device from here: https://developers.google.com/android/nexus/images I suppose the same thing should work for any other device if you can retrieve the factory ROM.
- Reboot your device into fastboot menu (as I described here)
- Enter in the ROM folder you downloaded, where you should have the script to reinstall it (flash-all.sh or flash-all.bat)
- Execute the script and you should see on the screen a question asking you if you want to unlock the boot loader (you must unlock it to install the stock ROM)
- On your computer screen you can follow the ROM installation log. When procedure ends (if no problem occurred) your device will be automatically boot.
- Reboot the device in fast boot mode
- From your computer execute fastboot oem lock
MacBook-Pro-di-Marco:nakasi-jwr66y mmornati$ fastboot oem lock < waiting for device > ... (bootloader) Bootloader is locked now. OKAY [ 1.447s] finished. total time: 1.447s
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