Trying to install another OS on my Android phone. Fly it isn't so popular phone, so I have lots of problems within installation. Also I used for this my laptop with Ubuntu 15.10. Now I'm trying to unlock oem with this command:

sudo fastboot oem unlock

and in my terminal just showed this: ... That's all. After tipping this:

adb reboot bootloader

my phone doesn't have normal bootloader with Android and title "Start", it has just grey screen and with inscription "fastboot mode 2 (NORMAL)" with green color. So, what I should to do in this situation? How can I to unlock oem on my phone? Thank's a lot.

  • 1
    after adb reboot boot loader oem unlock doesn't work - it says "FAILED(remote: :unknown oem command)". Then I type sudo fastboot continue - it works, and screen changes to black. Just black screen. Fastboot can find device ??????, but oem command working, that I said. I understand, that ... - it's mean waiting my answer on phone, I should confirm. But I don't have any messages in my phone, just black screen. Can I confirm it from console in laptop? – DefaultXYZ Nov 19 '15 at 10:12
  • I have the same problem on a Lenovo A7600-H. fasbtoot oem unlock, and in fact fastboot oem <anything> the terminal shows ... and doesn't return. – Richard Barraclough Nov 7 '18 at 12:20

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