Android fastboot waiting for devices

Question

I am trying to load a customized kernel on my NVIDIA test git. I typed fastboot boot myImage after which which I get:

 
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Answer 1

The shortest answer is first run the fastboot command (in my ubuntu case i.e. ./fastboot-linux oem unlock) (here i'm using ubuntu 12.04 and rooting nexus4) then power on your device in fastboot mode (in nexus 4 by pressing vol-down-key and power button)

Answer 2

In my case (on windows 10), it would connect fine to adb and I could type any adb commands. But as soon as it got to the bootloader using adb reboot bootloader I wasn't able to perform any fastboot commands.

What I did notice that in the device manager that it refreshed when I connected to device. Next thing to do was to check what changed when connecting. Apparently the fastboot device was inside the Kedacom USB Device. Not really sure what that was, but I updated the device to use a different driver, in my case the Fastboot interface (Google USB ID), and that fixed my waiting for device issue

Answer 3

On your device Go To Settings -> Dev Settings, And Select "Allow OEM Unlock" As shown on Unlock Your Bootloader

At least this worked for me on my MotoE 4G.

Answer 4

try to use compiler generated fastboot when this happes. the file path is out/host/linux(or other)/bin/fastboot and sudo is also needed. it works in most of the time.

Answer 5

Just use sudo, fast boot needs Root Permission

Answer 6

To use the fastboot command you first need to put your device in fastboot mode:

$ adb reboot bootloader

Once the device is in fastboot mode, you can boot it with your own kernel, for example:

$ fastboot boot myboot.img

The above will only boot your kernel once and the old kernel will be used again when you reboot the device. To replace the kernel on the device, you will need to flash it to the device:

$ fastboot flash boot myboot.img

Hope that helps.