I got a Nexus 9 tablet from Google I/O, which is really exciting because that means I have a device to install Android M Developer Preview. Google is hosting What's New in Android: Hack@Home this Friday to talk about M, so I want to make sure my device is ready before then.
I took a video of the process:
For those of you who prefer text to video, here are the steps, mostly from https://developers.google.com/android/nexus/images#instructions:
volantisimage from https://developer.android.com/preview/download.html.
Unzip it (
tar -zxvf filename.tgzon linux). Navigate to the unzipped image directory (For Nexus 9, it starts with
- Become a developer by tapping Build Number 7 times.
- Enable USB debugging.
- Important! Enable OEM unlocking.
adb reboot bootloader.
At this point your device is OEM locked:
fastboot oem unlock.
Press volume up to confirm unlocking the bootloader:
Now your device is OEM unlocked:
Wait for 5 minutes or so.
And voilà! A dialog warning you that this is a preview. Exactly what we want.
Lock again with
adb reboot bootloader, then
fastboot oem lock, then disable OEM unlocking from developer options after reboot.