I'm trying to flash the Android M Developer Preview onto my Nexus 9 (volantis) following the steps from Google.

However, when executing the unlock command, I get an error that permission is denied:

$ fastboot oem unlock
(bootloader) ability is 0
(bootloader) Permission denied for this command!
OKAY [  0.006s]
finished. total time: 0.006s

What have I done wrong?


The instructions don't make mention of the setting in the device's developer options.

Make sure to enable the "OEM unlocking" setting there:

Locate the "OEM unlocking" setting in the developer optionsEnable it

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.