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fastboot questions

I come from the world of Windows Mobile and have just recetly delved into hacking my G1. While I've had no problems installing jesusfreke's images or themes...I'm struggling with how to get fastboot to work.
Perhaps someone can give me some guidance. Anyone willing to give me some simple step by step instructions. I've searched for this and i think I have everything i need, but I'm unable to get to a point where I can type in commands. when i try to run adb, it open very briefly and closes.
What am i doing wrong?
Thanks,
Jason

Go to start -> run -> type in CMD
Navigate to the folder where adb is located.
Then type in adb devices to see if it finds ur device.
If not then make sure you have it plugged in and USB debugging is turned on in the phones settings under Development.
Also download the usb drivers/or the whole SDK if you havent yet.

nosaj13 said:
when i try to run adb, it open very briefly and closes.
Click to expand...
Click to collapse
If you try to execute a text mode executable in windows, it will close the terminal window as soon as the program finishes. If you run adb without any arguments, it will print the arguments out terminate. I could say the solution is to open run as and type cmd, but the true answer is to install Linux

nosaj13 said:
I come from the world of Windows Mobile and have just recetly delved into hacking my G1. While I've had no problems installing jesusfreke's images or themes...I'm struggling with how to get fastboot to work.
Perhaps someone can give me some guidance. Anyone willing to give me some simple step by step instructions. I've searched for this and i think I have everything i need, but I'm unable to get to a point where I can type in commands. when i try to run adb, it open very briefly and closes.
What am i doing wrong?
Thanks,
Jason
Click to expand...
Click to collapse
1. Download this
2. Extract the contents of the fastboot directory to the root of your C drive.
3. Go Start -> Run -> type 'cmd' (no quotes) and hit enter
4. Type 'c:' (no quotes) and hit enter
5. With your phone plugged in, you should be able to type 'adb devices' and it should return your phones serial number, which is usually in HTXXXXXXXX format. If it does not, make sure debugging is enabled on your phone and you have the adb drivers installed.
6. type 'adb shell reboot bootloader' and hit enter. The screen on your phone will go blank for a second and then you should be in the SPL with the skating androids. Make sure you see "FASTBOOT" at the bottom of the screen.
7. type 'fastboot devices' and hit enter. If you see your phone's serial number again, you have successfully established a fastboot connection with the phone and can run commands such as:
fastboot erase <partition> (erases the given partition)
fastboot flash <partition> <file.img> (overwrites and flashes given partition with given file. This is how one would restore from a nandroid backup)
fastboot reboot (reboots the device into user mode)
Hope that helps. Have fun

when i type adp devices i get an error that says "adp is not recognized as an internal or external command, operable program, or batch file"
what am i doing wrong?

nosaj13 said:
when i type adp devices i get an error that says "adp is not recognized as an internal or external command, operable program, or batch file"
what am i doing wrong?
Click to expand...
Click to collapse
First, the command is adb devices not adp. Second, make sure you copied the contents of the fastboot directory to the C drive. Third, make sure you that when you type 'c:' into the command line, the command prompt actually changes to "C:\>"

Datruesurfer said:
1. Download this
2. Extract the contents of the fastboot directory to the root of your C drive.
3. Go Start -> Run -> type 'cmd' (no quotes) and hit enter
4. Type 'c:' (no quotes) and hit enter
5. With your phone plugged in, you should be able to type 'adb devices' and it should return your phones serial number, which is usually in HTXXXXXXXX format. If it does not, make sure debugging is enabled on your phone and you have the adb drivers installed.
6. type 'adb shell reboot bootloader' and hit enter. The screen on your phone will go blank for a second and then you should be in the SPL with the skating androids. Make sure you see "FASTBOOT" at the bottom of the screen.
7. type 'fastboot devices' and hit enter. If you see your phone's serial number again, you have successfully established a fastboot connection with the phone and can run commands such as:
fastboot erase <partition> (erases the given partition)
fastboot flash <partition> <file.img> (overwrites and flashes given partition with given file. This is how one would restore from a nandroid backup)
fastboot reboot (reboots the device into user mode)
Hope that helps. Have fun
Click to expand...
Click to collapse
i did all the above steps with no problem at all till i got to number 7. when i typed in fastboot devices it just goes to the next prompt without my phone showing up.
If i plug in my g1 in normal mode i see it at the top under adb and in the usb section as a mass storage device.
In bootloader mode with fastboot on the screen it doesnt show up anywhere in the device manager.
Also when i follow the above quoted steps and type in the "adb shell reboot bootloader" and hit enter i hear the ding you hear when you unplug a usb device, and all instances of the phone then leave the device manager.
i have also uninstalled and reinstalled all drivers for the phone and all drivers that have to do with the usb ports on my win xp machine.
Anyone have any ideas i could try?

I think you need this program. I put it on my desktop, then just ran cmd, directed to it, and type in fastboot.

I7oobie said:
I think you need this program. I put it on my desktop, then just ran cmd, directed to it, and type in fastboot.
Click to expand...
Click to collapse
thats not it. i have that in the sys 32 folder and also on desktop

Fastboot mode not recognized
I'm having the same problem. I've installed all the correct drivers and in normal mode, I see the Android Composite Device (or something similar) in Device Manager.
As soon as I go into SPL mode (the 3 skateboarding androids screen), the device does not show up.
Anyone have any ideas? Thanks!

Datruesurfer said:
First, the command is adb devices not adp. Second, make sure you copied the contents of the fastboot directory to the C drive. Third, make sure you that when you type 'c:' into the command line, the command prompt actually changes to "C:\>"
Click to expand...
Click to collapse
When I'm in the Command Prompt and I type C:, the directory still reads C:\Documents and Setting\Reids. It won't change to only C:

Hi,
You have to do this to get back to c:
cd\
press enter
That should do it.

bestwebs said:
Hi,
You have to do this to get back to c:
cd\
press enter
That should do it.
Click to expand...
Click to collapse
Ok, thanks a lot. Got it working now.

I need help trying to flash my cupcake images that I have stored in my fastboot folder. I attached the pictures below. I will accept any help I can get.

EDIT: Doh, I thought I was in another topic.
My bad.

Are adb & adb's dll files located inside the same folder as fastboot??? They are suppose too be.
Is your usb cord directly plugged into your system or thru a hub??
Your phone, i bet is under usb mass....to check, expand your device manager window.
Expand your USB-Mass storage list.
With your phone in fastboot mode, click on the camera key and the back key. With enough time inbetween for your system to recognize that there might be a device hooked up.
Notice any change in the list??

Anyone wanting good instructions
http://androidcommunity.com/forums/f28/nandroid-v2-0-full-nand-backup-and-restore-tool-9336/
Read post 2 and go!

this seems like the most easiest thing to do but i still cant get it to work
i have downloaded everything needed and see ADB Interface on my device manager with a yellow mark on it when i try to update the dirver it fails and i got the drivers and point them to it but seems not to work
my phone is on the fastboot screen with the android skateboards guys
i dont know whats going on if someone know what am also doing wrong can tell me please...
This is what i get

linux (Ubuntu 12.04 amd64) adb verses fastboot

So I have looked at post about installing adk.. I've manually set it up, I've used a repository to setup, I've did the 'idiot proof SoupKit'..... no matter what I try the same thing happens.
I can run 'adb devices' and get a list of the android devices connected via USB. I see them just fine. My udev setup works, the adb commands works.. I have done this by manually installing from Google the latest adk, installing binaries. I can always get adb to see the devices.
When I run 'fastboot devices', it just returns without listing devices at all. Any other fastboot commands simply say < waiting on device > and nothing happens.
Why would adb work and fastboot not?
I have tried this HTC Incredible 1, HTC Incredible 2, and ASUS TF300T tablet...
Any help/advice would be appreciated.
John

A little knowledge goes a long way
Sorry to answer my own question in the forum, but I did not find an answer which I understood... Now I understand what I should have been doing. For the next folk like me:
adb - can communicate with your android device while it is running and has USB debug mode enabled. For ICS this USB debug option was under the developer settings. You can tell adb is communicating properly by running the command 'adb devices' and seeing your device show up in the output list.
fastboot - can communicate with your android device when it has been booted into 'fastboot' mode, not while booted normally form a system image. Running the command 'fastboot devices' when your USB is connected to a device booted into 'fastboot mode' will show a device if it is communicating properly.
From my browsing of many other messages, I did not see clearly articulated the need to BOOT into fastboot mode on the device. Maybe I'm just simple minded.
On my TF300T tablet, I got into fastboot mode by powering it off, and then starting it while holding down the down volume button and the power button at the same time. This brought me to a screen which I could use the volume down button to toggle between three modes, 1) erase data partition 2) fastboot mode (found it!) or 3) normal boot. I used the down volume key to move the selection to fastboot and then the up volume key to select fastboot. It then launched into 'fastboot' mode, awaiting fastboot commands.
Once my device was booted to 'fastboot mode', the latest fastboot executable from google worked. The downloaed exectuable from SoupKit and the downloaded version I found for Windows did not. From my experience, download the latest ADK from Google and use the platform-tools version of fastboot.
I certainly hope this detail helps the next poor soul who googles and read things they don't fulling understand.
P.S. This all start when my ASUS device would not update with the OTA update and after several days of really useless interaction with their support, I decided to take matters into my own hands. You have to love Android which lets you learn and grow without the specific task master of a bad support division.

Root Nvidia Shield clarification

Hi after reading through the post on GitHub on how to simply root your shield I have a few questions that the tutorial doesn't make clear:
1)There are a ton of files at the top and not sure what to do with them...
2) There is a bit where it explains "On your computer, navigate into the directory containing this file and enter the following command:
fastboot boot zImage_dtb ramfs.img.gz"
But it doesn't say that after you open the directory what you do with it?
Do you keep the window open and that's fine?
Do you type in it's location into command prompt before you type in: fastboot boot zImage_dtb ramfs.img.gz?
Just a bit confused as to what all the files are and where I put them and how they have to be utilised etc
Just need clarification for peace of mind
wanted to post the link but forum won't let me yet

Root explanation
Hi here is the main walkthrough from github but as I said there are a few plot holes for people who are new.
If your SHIELD is already unlocked, you can skip this section.
SHIELD ships with an unlockable bootloader. The bootloader is locked by default, which prevents anyone (including yourself) from booting custom OSes and changing system partitions to potentially obtain extra privileges. This is a significant security feature: in the event that your device gets stolen, an attacker will not be able to retrieve your personal data or use your device if your lock screen has a password set.
By unlocking the bootloader, you allow anyone with physical access to your SHIELD to boot custom images and flash system partitions. This opens the way for an attacker to access your personal information or physically damage your device. For this reason, unlocking the bootloader will erase all your personal data like a factory reset does (so a potential thief cannot get it) and will also void your warranty.
If you know you really, really want to take these risks, here is how you unlock SHIELD's bootloader.
Switch your SHIELD off (long press the NVIDIA logo button and select Power off).
Power your SHIELD on while maintaining the back and home buttons pressed (these are the two buttons that lie under the big NVIDIA-logo button, on its left and right). Release them once you see the bootloader screen.
Connect your SHIELD to your computer using a USB cable.
On your computer, enter the following command:
fastboot oem unlock
This will display the unlock menu. Read the disclaimer and think one last time about what you are doing. This is your last chance to stop.
Use the back and home buttons to select your option. If you decide to continue, select Unlock and press the NVIDIA-logo button to validate. Your personal data will be erased and your device marked as warranty-void permanently.
Regardless of your choice, you will be back to the bootloader screen. Using the same buttons, navigate to Poweroff and select this to power your SHIELD off.
Rooting SHIELD
Now your bootloader is unlocked, but you still don't have root access. For this, we need to install SuperSU, and we will do so by booting a custom Linux image that will do this for us.
Power your SHIELD on while maintaining the back and home buttons pressed (these are the two buttons that lie under the big NVIDIA-logo button, on its left and right). Release them once you see the bootloader screen.
Connect your SHIELD to your computer using a USB cable
On your computer, navigate into the directory containing this file and enter the following command:
fastboot boot zImage_dtb ramfs.img.gz
The kernel and ramdisk will be downloaded and started. You will see 4 penguins on your screen, and the message ROOTING SHIELD will appear. Shortly after, your device will reboot. Congratulations, you are rooted!
For some unknown reason USB debugging in Developer options might become unchecked after rooting. You will need to re-check it if you want to use ADB.
It is safe to perform the rooting operation as many times as you want (e.g. after an OTA). Your user data will not be erased by rooting itself, it is the act of unlocking the bootloader that does.
Is there anyone who can add a little to this to make it more simple for a noob like me?
I understand there is a file set that is at the top of the page and I downloaded the files which include zImage_dtb ramfs.img.gz
but don't know how to utilise them etc
There are no videos on youtube of how to do it and if anyone can add just a few more steps so that I know where I'm going with this (don't want to brick my system).
I just want controller support installed like Tincore or gamekeyboard so I can unlock the potential of the games library on GooglePlay.
Thanks for reading.

you copy those two files "zImage_dtb" & "ramfs.img.gz" to the same directory your adb and fastboot executeables are (same directory you issued the oem unlock command from)
then navigate to the same directory you did the oem unlock from via command line then issue the command "fastboot boot zImage_dtb ramfs.img.gz"
it's pretty simple but I can run you through a simple example of what I did
1)download android sdk
2)copy platform tools folder to a directory on c drive (exp c:\tools\ )
3)copy the 2 files above to the same folder along with cwm recovery(optional)
4)boot shield into fastboot mode (home+back+power)
5)navigate to the folder with adb, fastboot, and the above files in it.
Code:
cd c:\tools
6)detect if fastboot driver is installed with "fastboot devices" if result, then continue, if no result, then check if correct driver and check connection
7)issue oem unlock command and follow the onscreen prompts
Code:
fastboot oem unlock
8)restart device, after a full boot cycle(wipes data), power back into fastboot
9)issue the "rooting image" command, device with automatically reboot
Code:
fastboot boot zImage_dtb ramfs.img.gz
*10) optionally reboot back into fastboot and install cwm recovery
Code:
fastboot flash recovery recovery.img
pretty simple

thanks for fast reply.
Ok so I have Two different versions of Android SDK (32 bit and 64 bit) which one do I use?
"copy platform tools to a directory on C drive (exp C:\TOOLS\)"
What are platform tools?
"copy the two files above to the same folder along with cwm recovery"
What two files? do you mean the zImage_dtb and ramfs.img.gz? Do they go into the C:\TOOLS\ folder?
"navigate to the folder with adb, fastboot, and the above files in it"
What do you mean by navigate? Do you simply mean open the folder or do I use a program to do this?
"Detect if fastboot driver is installed with "fastboot devices" if result, then continue, if no result, then check if correct driver and check connection"
What's fastboot devices? What does result and no result mean? What does Check driver and check connection mean? how dod I do that?
I'm confused by all the lingo, what applications I should be using and when exactly do I start using command lines etc
Thanks for help so far been great but I need step by step instructions eg
open folder, copy and paste file1 and file 2 to this folder
open application X
click import file 1 and file 2
type XXXXXX\root\cdrive into command
press enter
see?
I do not know what some of the words mean and how to do some of the stuff the tutorial says. It's jargon and I have all these files, in all these folders with no idea how to do this from start to finish.
Appreciate the help so far but you are dealing with a novice. I know the work won't take long but I need all the relevant info, in one list, with consistent language to ensure I do everything as it should be done.
Bless you sir and...
Good luck

If your confused by my instructions you need to wait for a "one click" installer, sorry.

gogul1 said:
Ok so I have Two different versions of Android SDK (32 bit and 64 bit) which one do I use?
"copy platform tools to a directory on C drive (exp C:\TOOLS\)"
What are platform tools?
"copy the two files above to the same folder along with cwm recovery"
What two files? do you mean the zImage_dtb and ramfs.img.gz? Do they go into the C:\TOOLS\ folder?
"navigate to the folder with adb, fastboot, and the above files in it"
What do you mean by navigate? Do you simply mean open the folder or do I use a program to do this?
"Detect if fastboot driver is installed with "fastboot devices" if result, then continue, if no result, then check if correct driver and check connection"
What's fastboot devices? What does result and no result mean? What does Check driver and check connection mean? how dod I do that?
I'm confused by all the lingo, what applications I should be using and when exactly do I start using command lines etc
Thanks for help so far been great but I need step by step instructions eg
open folder, copy and paste file1 and file 2 to this folder
open application X
click import file 1 and file 2
type XXXXXX\root\cdrive into command
press enter
see?
I do not know what some of the words mean and how to do some of the stuff the tutorial says. It's jargon and I have all these files, in all these folders with no idea how to do this from start to finish.
Appreciate the help so far but you are dealing with a novice. I know the work won't take long but I need all the relevant info, in one list, with consistent language to ensure I do everything as it should be done.
Bless you sir and...
Good luck
Click to expand...
Click to collapse
Step by step instructions like that would take quite a long time to write. Its basically assumed that navigate is a straight forward instruction, namely, open My Computer, click C:\, click something else, etc etc. 32 bit vs 64 bit, again, you should know what your computer is running and use the correct one respectively.
The reason they dont issue novice instructions is for 1 reason only. People who such as yourself claim to not understand the "jargon" are also those who are more likely to make a mistake when rooting. This can lead to a completely bricked device, ie one that will no longer turn on and load up android, totally dead device. As far as the manufacturer is concerned, a bricked device unless bricked by one of their own updates on a non rooted shield installed correctly, is not covered by warranty. This leads said novice to accuse the tutorial writer of having something wrong in the tutorial when in reality they have clicked the wrong thing etc.
Either way, end result: dead device.
Rooting is not aimed at the novice. It is aimed at the advanced user.

Thank you
I understand that and appreciate the explanation. I can work my laptop and I know that my laptop is 32bit or 64bit but it did not say at any point that it was referring to my computer. It just said download the 32 or 64 bit version. Well I have to make sure what they are talking about before I go and try to root my device as I like clarification on everything I do so that I get it right (and don't brick it). At the moment the explanations are all over the place, some info here, another bit there and was hoping somebody could link it all for me and make sense of the order in which I would do things. I have installed graphic cards in my laptop, put custom firmware on to ipods, psp's, computer etc but this is my first foray into android territory and would like to get it right. I am trying to follow a video tutorial but my computer's reaction to driver updates for the ADB/Fastboot drivers is telling me my drivers are up to date and I'm not getting the error message his is. This means I'm not sure where to go as the situation is diffferent s He is trying to get motochopper working for shield so it will root the device and hoped it would do the same for me.
Hopefully some clarification will come sooner rather than later but won't venture fourth until I'm absolutely sure of what needs to be done.
Again, thanks for the help it is appreciated.:laugh:

Sorry for being so abrupt, it wasn't my intension, you are trying to learn. I will not give a step by step which I feel would be the best, yet potentially more dangerous option for you though.
The parts written in the "code" blocks are what you copy and paste into the command line. When I say navigate I mean by changing directory via command line. You can copy files with a graphical file manager as it's quicker but navigate could also mean graphically.
Google search how to tell if you are running 32 or 64 bit windows, there are better guides and videos than I would be able to describe in a few lines. I was assuming you had already unlocked your bootloader as it is required before root, I covered it as point of reference only.
Platform tools is a folder in the SDK, if you install the SDK you will see that folder where you install it.
Fastboot is the utility also in the SDK that you run from command line that's in the code blocks I posted. If you run the command it will either give a result saying a device is detected or it won't show anything (no result) and you have an issue. If you have a driver issue then that's a whole other problem with a specific forum topic for, but I also assumed you unlocked your bootloader which would require you have fastboot and driver issue resolved.
Main cause of my snappiness is it says the requirement (first line of what you quoted) is unlocked bootloader and you are asking questions about rooting (step two after unlocking bootloader) didn't realize you were stuck in step 0, trying to figure out where to start.

gogul1 said:
I understand that and appreciate the explanation. I can work my laptop and I know that my laptop is 32bit or 64bit but it did not say at any point that it was referring to my computer. It just said download the 32 or 64 bit version. Well I have to make sure what they are talking about before I go and try to root my device as I like clarification on everything I do so that I get it right (and don't brick it). At the moment the explanations are all over the place, some info here, another bit there and was hoping somebody could link it all for me and make sense of the order in which I would do things. I have installed graphic cards in my laptop, put custom firmware on to ipods, psp's, computer etc but this is my first foray into android territory and would like to get it right. I am trying to follow a video tutorial but my computer's reaction to driver updates for the ADB/Fastboot drivers is telling me my drivers are up to date and I'm not getting the error message his is. This means I'm not sure where to go as the situation is diffferent s He is trying to get motochopper working for shield so it will root the device and hoped it would do the same for me.
Hopefully some clarification will come sooner rather than later but won't venture fourth until I'm absolutely sure of what needs to be done.
Again, thanks for the help it is appreciated.:laugh:
Click to expand...
Click to collapse
Download 64 bit software for 64 bit windows and 32 bit on 32 bit windows. Only notable exceptions are where a guide explicitly says to get 32 bit for some particular reason (in my case the only time I have come across this is MSI afterburners screen recording facilities only functioning on a 32 bit program for some reason, no 64 bit version) or if you are running 32 bit windows and physically cannot run 64 bit software even though a guide says "use 64 bit java etc etc".
rather interested in installing a graphics card in a laptop seeming as laptops use graphics cards that are soldered down to the motherboard not on a seperate removable card in all with very few (but existant) exceptions.... I think asus, dell and someone else did offer them at one point, its actually what the MXM connector was invented for (but its used for a few other things now instead).
Anyway. Its always good to have clarification. I think the post above me gives a few starting points and as always: google is your friend (so are bing and yahoo, but they are those friends where once you leave your job or school or whatever you probably wont ever see again).

boot achieved
I boot loaded the Shield through dab and boot loader.
Shield restarted once I chose to unlock the shield. I lost all my stuff (as expected) and it restarted. The drivers then reinstalled on my laptop.
I restarted my laptop and the shield again and tried to reinstall the drivers that were made for the ADB but sadly I get this message now...
"Windows has determined that your driver software is up to date MTP USB DEVICE"
So I restarted everything and the device is now showing up in the Andriod Device driver list.
I am using minimal adb and Fastboot application. It opens the command menu
I type in
adb reboot bootloader and I get the reply "error:device not found"
any ideas?
Sigh!

gogul1 said:
I boot loaded the Shield through dab and boot loader.
Shield restarted once I chose to unlock the shield. I lost all my stuff (as expected) and it restarted. The drivers then reinstalled on my laptop.
I restarted my laptop and the shield again and tried to reinstall the drivers that were made for the ADB but sadly I get this message now...
"Windows has determined that your driver software is up to date MTP USB DEVICE"
So the shield is now showing up in my computer manager under Portable Devices and not under the Android Devices like it did when I installed the custom drivers the first time.
Will this be an issue when I come to root?
Sigh!
Click to expand...
Click to collapse
the MTP driver is for plugging the shield in and viewing the file system. If the device isn't under android devices in device manager then you may need to reinstall the ADB drivers or just double check that the ADB can see the device (it may).
Open a command prompt. type "cd [path to the android sdk]\platform-tools"
Then type "adb devices".
It should list all the android devices it can make a debug connection to. If the Shield is in that list your good, otherwise don't proceed any further until you can rectify that.
The other solution is that you dont need ADB drivers on a linux system for some reason. Don't ask why. I havent a clue. But that would necessitate installing linux.
And something that is useful for finding the adb on the command line again in future for windows. You don't want to "cd" into the correct folder every time (the command line equivalent of opening folders). Sometimes you just want to be able to open the command prompt, type "adb devices" and it to just work. That's doable by altering your system PATH variable.
Open my computer. Right click > Properties, should open the System window.
Left side there should be a button saying "Advanced system settings".
It will open the "System Properties" window to the "Advanced" tab (if it isnt on that tab just switch).
Bottom of the window should be a button saying "Environment Variables...". Click it.
Now the window that appears will be split in 2. User variables and System variables. There is a PATH entry in both, it is best that you only change 1. If you are the only user or you only want your user to be able to access the adb, you can change the User variable. Otherwise you can change the system variable for the adb to work on all users. For me I had to add python to my path once but I wanted to do this for all users so I changed the system one, the PSP SDK I installed however altered the User variable by default. Make your choice and find the variable "PATH" in either one.
Click Edit. A window will appear with Variable name and Variable Value. At this point what I recommend doing is copying the entire contents of value into a notepad file and saving them as a backup. Then cancel and go back into it.
Code:
C:\Program Files (x86)\Intel\iCLS Client\;C:\Program Files\Intel\iCLS Client\;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;%SYSTEMROOT%\System32\WindowsPowerShell\v1.0\;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x86;C:\Program Files (x86)\Intel\OpenCL SDK\2.0\bin\x64;C:\Program Files\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\DAL;C:\Program Files (x86)\Intel\Intel(R) Management Engine Components\IPT;C:\Program Files (x86)\Lua\5.1;C:\Program Files (x86)\Lua\5.1\clibs;C:\Python27;c:\Program Files (x86)\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\Tools\Binn\;c:\Program Files\Microsoft SQL Server\100\DTS\Binn\
That is my Path variable.If you look the path variable is mostly a series of filepaths (or other variables too) which are seperated with ";". When you type a command such as "adb" into a command prompt what windows does is searches the current command prompt directory for a file it can execute which is called "adb" (it ignores extensions unless explicitly given one), if it doesnt find it in the current directory it searches each folder in the system path variable for the same executable (it ignores sub directories, it will only search the folders above on my system). So if we want to be able to type adb from any folder, we need the folder the adb is in to be added to the system path variable.
Simply add this to the end of it
Code:
;[whatever the path to the adb folder on your system is]
It will be whatever you had to add after "cd" to get to the adb earlier (must not leave out the C:\Users etc etc if its stored in your documents, cd will let you get away with ignoring that, the variable requires the FULL filepath).
Save the variable. Open a command prompt. Type adb, should work. If not, QUICKLY RESTORE THE BACKUP BEFORE WORKING OUT WHAT WENT WRONG. Should be safe with the broken variable to be fair, but you don't want to risk anything. If you dont think your going to use the adb often then simply dont bother updating the path variable rather than taking the (minimal) risk.
Wow my path variable is beginning to get a bit long now I only manually added python and lua to it. The rest will be the default entries and the SQL server stuff appears to be from installing visual studio. Yours probably wont match.

hehe you're going to hit me in a minute...
message deleted as I was being a moron....

ok I should be entirely clear as you guys are trying to help
ok I should be entirely clear as you guys are trying to help me so it's best i let you know what I have done up until this point.
Ok so I boot loader my shield.
I downloaded minimal ADB and Fastboot. I also downloaded the drivers you recommended in the forum.
I installed the drivers:
My shield showed up in the computer Manage list as a Portable device.
I chose to install the new drivers, it asked if I still wanted to go ahead as the drivers could not be verified and I said yes.
The drivers installed and the Shield changed from being in the portable list to showing up as an Android device.
Success I believe.
I then opened ADB BOOTLOADER and booted my Shield Manually.
I then typed in the relevant prompts in the command and a list of options showed up on the shield.
It showed my device number in the command prompt which was the one on my shield screen.
I then command the unlock function and the shield offered me the option to lock or unlock.
I chose Unlock and it then rebooted.
When it restarted, my computer reinstalled the device drivers and my shield had reset to factory settings (as it should).
I then looked in the Computer Manage list and my Shield had reverted back to being in the Portable Devices list.
I restarted both again and the Shield then showed up under Android Devices like it did when I installed the custom drivers the first time.
But the name of the device is Nvidia Shield - not Nvidia Shield ADB like in the tutorial video... not sure it that helps.
I enabled USB Debugging,
put the Superuser.apk and Su bin file into the minimal AADB and Bootloader folder.
I then put the Thor-insecure-boot.img in the Minimal ADB and Bootloader folder too.
I started up the command prompt from the minimal ADB and Bootloader.
I then saw this
C:\Program files <X86>\Minimal ADB and Fastboot>
I then typed in adb reboot boot loader and pressed enter
I got
error: device not found
So I decided to take the above advice and opened a command prompt
I typed in cd C:\tools\adt-bundle-windows-x86_64-20130729\sdk\platform-tools
and pressed enter:
It repeated what I typed and I then put in adb devices.
It then came back with:
List of Devices attached
but nothing was listed....
doh!

Progress!
Ok so I uninstalled my drivers to start again, plugged in the shield and it reinstalled my drivers and now under Android Devices it shows NVIDIA SHIELD ADB
Result!
Now I opened the dab cmd prompt
typed in
adb reboot fastboot
and it booted my shield! jolly good
But then I typed in
fastboot boot thor-insecure-boot.img
I then had
<waiting for device>
show up in the command window.
This is where it stayed.
On the screen of my shield I have options:
continue
restart bootloader
recovery mode
poweroff
Do I have to choose one of these in order for it to begin the thor img command?

C:\tools\adt-bundle-windows-x86_64-20130729\sdk\platform-tools Just incase you didnt get it earlier. That would be the path required for the variable change above. Just whack a ; on the end of the existing variable and throw that new path on the end and done.
But yes, adb devices not listing shield is not a good thing. Try reinstalling the ADB driver for the shield manually (you cant do it via device manager etc).

cool
I'm past that and now <waiting for device> problem to rectify. Am looking online now but there isn't much on there so far...
looking under device manager it shows up under Android Device as Nvidia Shield ADB but it also shows up under portable devices as SHIELD.
Whilst in boot mode the device only shows up in portable devices with a exclamation mark next to the device.
*UPDATE*
I uninstalled the portable device driver because I think it may have been causing confusion.
I then typed adb devices into CMD and a list of devices showed the serial number of the nvidia Shield.
I then typed in adb reboot bootloader in and it booted.
I then tried adb devices again and nothing showed up.
When I go into bootloader The Android Device: Nvidia Shield ADB driver disappears in manager once I go into bootloader mode. Is this normal?
Hmmmmmmm
definetly something to do with the drivers.
I'm on windows 7 64bit by the way.
Going back into device manager I noticed that there is another device under Other devices, upon looking at it it is Fastboot and has an exclamation mark in a yellow triangle next to it (Minimal dab and fast boot is open though).
Such a bummer as I'm so close yet so far

picture
ok so here is a pic of my devices list fastboot is there

before boot
This is the devices it can see before I put the shield in boot mode

devices seen after shielf in boot mode
the are the devices seen after I put the Shield in boot mode. It can't see any devices

waiting for devices
This is the screen on the shield in boot mode. The CMD screen says "Waiting for Devices"

[GUIDE] Nexus Player - How to Unlock Bootloader and Root using USB cable

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Setup, Preparation and Prerequisites
Open command prompt - Press Window Key + R, type in "cmd" (without the quotes), and hit enter.
USB Debugging - On your nexus player go to Settings > About > Tap on Build number 7 times. This will enable Developer options. Now go back to Settings > Developer options > Enable USB debugging
Enter bootloader mode - Hold the button on the bottom of the device when you plug in the power cable, or enable developer options and "adb reboot bootloader"
Once you are in fastboot mode, the light below nexus player will be blinking constantly. You can verify by using "fastboot devices"
ADB Installation
Download the full Android SDK here (scroll to the bottom of the page>DOWNLOAD FOR OTHER PLATFORMS>SDK Tools Only) or get a slimmed version containing only the essential components here
Extract the zip and place the android-sdk-windows folder on your desktop.
**If you chose to download the slimmed sdk skip to step 5**
Only if you downloaded the full sdk: Go into the android-sdk-windows folder and run SDK Manager.exe. Install the following packages (there are a total of 4 packages):
- Tools > Android SDK Tools, Android SDK Platform-tools
- Extras > Android Support Library, Google USB Driver
Only if you downloaded the full sdk: Go back into the android-sdk-windows directory, and you should see a new folder named platform-tools. If you don't see this new folder, repeat the step above.
To confirm that it is indeed working, open a command prompt window and enter the following commands:
Code:
cd Desktop/android-sdk-windows/platform-tools
adb version
If it displays "Android Debug Bridge version x.x.xx" it is working. If it is gives an error saying that adb is not a recognized command, it has not been successful. Carefully repeat the steps above if this is the case. Close the command prompt window when you are done.
Show File Extensions - Open a command prompt window and run "Control folders" (without the quotes). Go to the View tab and uncheck the "Hide extensions for known file types" option. This will help avoid confusion when renaming files.
Backup (Optional) - Unlocking the bootloader will completely wipe all data from the device. This includes apps, settings and even the contents of the internal storage (pictures, music, etc.). Copy all important files off the nexus player onto a PC or upload them to a cloud.
Driver Installation
Go to Device Manager, find the Android device, and select Update Driver Software.
Select Browse my computer for driver software
Select Let me pick from a list of device drivers on my computer
Selecting show all devices
Clicking have disk
Finally selecting Desktop\android-sdk-windows\extras\google\usb_driver\android_winusb.inf as the driver
Alternative you can also download and install the Universal ADB Driver.
Downloads
Root:
Android 7.X:
- Coming Soon-
Android 6.X:
http://cord-cutters.wonderhowto.com/how-to/root-nexus-player-0160218/
http://androidflagship.com/16765-root-nexus-player-android-6-0-marshmallow
Android 5.X:
Download the SuperSU zip below. Extract the zip file and you will have (root.img) to platform-tools folder located on your desktop within the android-sdk-windows folder.
SuperSU (Forum Thread) or SuperSU (Direct link)
Information
Rooting this device is actually quite a simple and easy process. Before you begin, it is recommended that you at least try to understand what each part of the process will do. Although this guide will elongate each step in order to show all of the details, the method used can be broken up into 2 main steps: Unlocking the Bootloader and Rooting. Each new step relies on the previous step to have been completed, and a basic summary of each part is:
Unlocking Bootloader: Opens the door to the internal memory of the device to be written on to. This allows you to flash images onto the main partitions of the device in future.
Rooting: You can gain root booting up root.img
1. Unlocking Bootloader
Turn the nexus player off. Then go into bootloader mode by holding the button on the bottom of the device when you plug in the power cable, or enable developer options and "adb reboot bootloader"
Plug nexus player into your PC, then open a command prompt window and type:
Code:
cd Desktop/android-sdk-windows/platform-tools
Code:
fastboot devices
This command will list the connected devices. If your nexus player serial number shows up you are good to go and may continue. If the nexus player is NOT listed this indicates that your drivers are not installed correctly. In order for you to continue you must fix your drivers so that your phone is listed under fastboot devices.
If the nexus player has been recognized by the command above, proceed to unlocking the bootloader with the following command:
Remember that this step will wipe EVERYTHING off the phone
OEM unlock twice
Code:
fastboot oem unlock
Code:
fastboot oem unlock
After you have done, please proceed onto the next section of the guide.
2. Installing a Custom Recovery
http://forum.xda-developers.com/nex...recovery-twrp-2-8-6-0-touch-recovery-t3114717
https://twrp.me/devices/asusnexusplayer.html
3. Rooting
Now that your nexus player has an unlocked bootloader, now this step is to gain root
Android 7.X
- coming soon -
Android 6.X
Require: TWRP, Custom boot.img and flashable supersu
(Refer to above link)
Android 5.0
Warning: This rooting guide is for Android 5.X only!
Boot (not flash) the root image which will give you root with the stock ROM
Confirm that you have downloaded the SuperSU zip from the downloads section above and you have extracted it and it is located in the platform-tools folder inside of the android-sdk-windows folder on your desktop.
Make sure the nexus player is in bootloader mode
Open a command prompt window and run the following commands:
Code:
cd Desktop/android-sdk-windows/platform-tools
Code:
fastboot boot root.img
This will install SuperSU on your device, once the command has completed continue.
Open SuperSU and update the binaries.
Keep in mind that the first boot may take longer than usual.
Congrats! Your nexus player now has an unlocked bootloader, and is rooted.
==================================================
How to flash factory image for Nexus Player?
1) Download image file for your nexus player - https://developers.google.com/android/nexus/images
2) Boot your Nexus device into fastboot mode.
3) On your computer, use 7zip to extract the .tgz file you downloaded from the Android Developer website. Use 7zip a second time to extract the .tar file you extracted from the .tgz. When you’re done, you should have a folder with several files in it.
4) Copy all of these files and paste them in the platform-tools folder in the Android SDK on your computer. If you followed the above tutorial, this should be under the C drive, then under Program Files (x86) on Windows. Linux users, you know where you put it.
5) If you have not already done so, connect your Nexus device to your computer. ADB and Fastboot commands should already work at this point if you’ve been following along.
There are two flash-all files. If you’re in Windows, you’ll want to double click the one that has the gear logo and says “Windows Batch File” on the right. If you’re on Linux, you’ll want to double click the flash-all.sh.
At this point a box should pop up and you should see the installation taking place. While this is going on, do not unplug your device for any reason. Let it do its thing.
6) Once the installation process as finished, your device will automatically reboot and you can now safely disconnect your device from your computer.
==================================================
Credits:
- Chainfire (SuperSU and Rooting guide)
- Chromium (Easy to understand and detailed guide format)
- DevinWatson (USB driver guide)
- androidauthority (Flash firmware image guide)

Nice guide.
What about installing BusyBox?

I have a USB OTG cable but the adapter is female on the available USB side...I am not sure how to go about connecting my laptop/PC to the NP in order to perform ADB commands. Do I need a special cable or is there another way?

arecad said:
I have a USB OTG cable but the adapter is female on the available USB side...I am not sure how to go about connecting my laptop/PC to the NP in order to perform ADB commands. Do I need a special cable or is there another way?
Click to expand...
Click to collapse
Don't use the USB OTG cable, use a micro USB cable (same kind of cable that comes with android phones)

I cannot believe I missed that, how embarrassing. Thanks for the response, now I can follow this guide. I was thinking too hard about the OTG cable being a necessary piece of the puzzle.

I am able to get to the bootloader with no problems, I've got ADB and Fastboot installed on my PC, as well as the drivers. However ADB doesn't pick up my NexusPlayer even though fastboot does. Thoughts?
See Attachments
EDIT: Nevermind, I was expecting different responses from adb/fastboot. When in the bootloader adb will not confirm a connection, only fastboot. Sorry for being a noob...

xDragonZ said:
1. Unlocking Bootloader
[*] Turn the nexus player off. Then go into bootloader mode by holding the button on the bottom of the device when you plug in the power cable, or enable developer options and "adb reboot bootloader"
[*] Plug nexus player into your PC, then open a command prompt window and type:
Code:
cd Desktop/android-sdk-windows/platform-tools
Code:
[COLOR="red"]adb devices[/COLOR]
This command will list the connected devices. If your nexus player serial number shows up you are good to go and may continue. If the nexus player is NOT listed this indicates that your drivers are not installed correctly. In order for you to continue you must fix your drivers so that your phone is listed under adb devices.
Click to expand...
Click to collapse
I could be mistaken, but when you're in the bootloader you're going to use FASTBOOT and not ADB commands. So therefore the command should be "fastboot devices" instead of "adb devices"?

midnightzak said:
I could be mistaken, but when you're in the bootloader you're going to use FASTBOOT and not ADB commands. So therefore the command should be "fastboot devices" instead of "adb devices"?
Click to expand...
Click to collapse
AFAIK ADB is for Android, and Fastboot is for bootloader.
But i have the oposite problem. Mine NP is getting recognized useing ADB when normaly booted, but when i am in fastboot mode, fastboot isent working. I get no output when run 'fastboot devivces'. I have both tried to set the NP in fastboot mode by using the hiod button and plug in power, and with adb rebbot bootloader.
Any one have a clue why adb works, but not fastboot?

Double check to see if you have the latest version of fastboot. I have read that if you don't have the most up to date version the NP is not recognized.

Sleeepy2 said:
Double check to see if you have the latest version of fastboot. I have read that if you don't have the most up to date version the NP is not recognized.
Click to expand...
Click to collapse
+1 this.

goxboxlive said:
AFAIK ADB is for Android, and Fastboot is for bootloader.
But i have the oposite problem. Mine NP is getting recognized useing ADB when normaly booted, but when i am in fastboot mode, fastboot isent working. I get no output when run 'fastboot devivces'. I have both tried to set the NP in fastboot mode by using the hiod button and plug in power, and with adb rebbot bootloader.
Any one have a clue why adb works, but not fastboot?
Click to expand...
Click to collapse
Have you re-installed the Google driver when you are booted in the bootloader? The driver needs to install twice: once when booted into Android, and once when booted into the bootloader

ADB fastboot for Mac Quick Question??
Hey guys does anyone have any idea on how this can be done on a Mac....I know I know. When I initially plug in my Nexus player with the micro usb, nothing happens on my mac or the Nexus so i am guessing that the drivers are not installed. How would i go about getting these for the Mac? I have already downloaded the slim version of the ADB and Fastboot files with the platform tools into a folder on my desktop named Andriod, so i have these already. And i know that if you hold the button down on the nexus and plug the power in it brings up the bootloader screen. I just need help with the commands in terminal and where to access the drivers from. Also, on the Nexus the Developer options have already been enabled and USB debugging has been turned on. If anyone can help, It would be much appricated! Just started to use terminal commands so yes i am a noob in this department . Thanks agin in advance.
-Jason

MrBoostinduced said:
Hey guys does anyone have any idea on how this can be done on a Mac....I know I know. When I initially plug in my Nexus player with the micro usb, nothing happens on my mac or the Nexus so i am guessing that the drivers are not installed. How would i go about getting these for the Mac? I have already downloaded the slim version of the ADB and Fastboot files with the platform tools into a folder on my desktop named Andriod, so i have these already. And i know that if you hold the button down on the nexus and plug the power in it brings up the bootloader screen. I just need help with the commands in terminal and where to access the drivers from. Also, on the Nexus the Developer options have already been enabled and USB debugging has been turned on. If anyone can help, It would be much appricated! Just started to use terminal commands so yes i am a noob in this department . Thanks agin in advance.
-Jason
Click to expand...
Click to collapse
http://developer.android.com/sdk/win-usb.html
"Note: If you're developing on Mac OS X or Linux, then you do not need to install a USB driver. To start developing with your device, read Using Hardware Devices."
http://developer.android.com/tools/device.html

Sleeepy2 said:
http://developer.android.com/sdk/win-usb.html
"Note: If you're developing on Mac OS X or Linux, then you do not need to install a USB driver. To start developing with your device, read Using Hardware Devices."
http://developer.android.com/tools/device.html
Click to expand...
Click to collapse
Hey Sleepy2, I just did a brief read through and it states this:
Set up your system to detect your device.
If you're developing on Windows, you need to install a USB driver for adb. For an installation guide and links to OEM drivers, see the OEM USB Drivers document.
If you're developing on Mac OS X, it just works. Skip this step.
If that is the case, what would you suggest doing next? Thanks again for helping!

MrBoostinduced said:
Hey Sleepy2, I just did a brief read through and it states this:
Set up your system to detect your device.
If you're developing on Windows, you need to install a USB driver for adb. For an installation guide and links to OEM drivers, see the OEM USB Drivers document.
If you're developing on Mac OS X, it just works. Skip this step.
If that is the case, what would you suggest doing next? Thanks again for helping!
Click to expand...
Click to collapse
Open a terminal, navigate to the directory where you downloaded fastboot and go ahead with the commands shown in the first post. You will probably have to add a "./" in front of the commands given that you are on a mac, e.g.,
Code:
fastboot devices
becomes
Code:
./fastboot devices

I seem to be having the same problem as goxboxlive. I have tried installing the drivers about 100x tried on several computers and rebooted many a time. The only thing I can think of from the posts in here was to update fastboot but I dled the android studio and I would assume that has the latest version in there? Otherwise I couldn't find somewhere to download just fastboot from. Any help or recommendations or where I can dl the latest fastboot?
---------- Post added at 02:28 PM ---------- Previous post was at 01:57 PM ----------
Follow up. Got it to work. In the guide it says after booting into fastboot to type "adb devices" in the console. You should instead type "fastboot devices" to see if you have the correct drivers and then go on from there. This worked for me, hopefully it will help someone else too.

knobbs said:
I seem to be having the same problem as goxboxlive. I have tried installing the drivers about 100x tried on several computers and rebooted many a time. The only thing I can think of from the posts in here was to update fastboot but I dled the android studio and I would assume that has the latest version in there? Otherwise I couldn't find somewhere to download just fastboot from. Any help or recommendations or where I can dl the latest fastboot?
---------- Post added at 02:28 PM ---------- Previous post was at 01:57 PM ----------
Follow up. Got it to work. In the guide it says after booting into fastboot to type "adb devices" in the console. You should instead type "fastboot devices" to see if you have the correct drivers and then go on from there. This worked for me, hopefully it will help someone else too.
Click to expand...
Click to collapse
Yep, i posted this earlier in the thread, kinda surprised OP hasn't updated it.
http://forum.xda-developers.com/showpost.php?p=58172001&postcount=7

midnightzak said:
I could be mistaken, but when you're in the bootloader you're going to use FASTBOOT and not ADB commands. So therefore the command should be "fastboot devices" instead of "adb devices"?
Click to expand...
Click to collapse
knobbs said:
In the guide it says after booting into fastboot to type "adb devices" in the console. You should instead type "fastboot devices" to see if you have the correct drivers and then go on from there. This worked for me, hopefully it will help someone else too.
Click to expand...
Click to collapse
midnightzak said:
Yep, i posted this earlier in the thread, kinda surprised OP hasn't updated it.
http://forum.xda-developers.com/showpost.php?p=58172001&postcount=7
Click to expand...
Click to collapse
To avoid further confusion, I've updated the post since the OP hadn't yet.

midnightzak said:
Yep, i posted this earlier in the thread, kinda surprised OP hasn't updated it.
http://forum.xda-developers.com/showpost.php?p=58172001&postcount=7
Click to expand...
Click to collapse
efrant said:
To avoid further confusion, I've updated the post since the OP hadn't yet.
Click to expand...
Click to collapse
Thank you, saw your post that time and wanted to change it but keep forgetting.
Currently working on some basic developer app for Nexus Player.

xDragonZ said:
Thank you, saw your post that time and wanted to change it but keep forgetting.
Currently working on some basic developer app for Nexus Player.
Click to expand...
Click to collapse
It's all good, wasn't terrible let to figure out, and if you're developing even more for the Nexus Player, the more power to ya! Keep it up!

Fastboot will not detect my device while rooting

I've been trying for the past couple of days to root my Oneplus One. I started with this tutorial: (http://forum.xda-developers.com/oneplus-one/general/guides-bacon-timmaaas-how-to-guides-t2839471) which is featured in the FAQ (which I've read through) and I've gotten stuck at one location.
You can test fastboot by connecting your device to your PC while booted into fastboot mode (power + volume up) and issuing this command:
Code:
fastboot devices
It should return your device serial number, if so, fastboot is working.
Click to expand...
Click to collapse
The ADB command appears to be working, but when I boot into fastboot mode (and when I'm not in it as well), the PC does not detect the phone. I've tried connecting it to multiple USB ports, and I'm using the official Oneplus One cable, so I'm at a bit of a loss of what to do.
However, I feel like I've identified where the source of the error is. If you see here: (http://i.imgur.com/IE1Bxjs.png), you can see that the phone is being detected under Portable Devices. In all of the tutorials I've looked through so far, it's been detected under something like "Android Phone" or "ADB Interface". I've tried various things to fix this, the most common of which is installing drivers onto/for the phone. I've tried the one here: (http://forum.xda-developers.com/showthread.php?t=1413293), which I know is for Archos phones, but should work similarly, as I tried both the Universal ADB driver and the Google one, from the SDK Manager. I kept getting an error telling me that: "the folder you specified doesn't contain a compatible software driver for your device."
I've also tried the one here: (http://www.makeuseof.com/tag/android-wont-connect-windows-adb-fix-it-three-steps/) (let me know if external links aren't allowed and I'll remove it.) This doesn't seem to work either, as I get this error (http://i.imgur.com/CLATXsl.png) when it tells me to:
If you cannot get any driver to work, you will need to force installation. Instead of choosing “Let me pick from a list of device drivers on my computer” in the previous step, you will choose “Browse for driver software on your computer” and manually find the directory where you installed Koush’s drivers.
The location on your hard drive looks something like this:
C:\Program Files (x86)\ClockworkMod\Universal Adb Drivers\
Windows will then install the drivers. From now on, whenever you connect the Android device with debugging enabled, Koush’s drivers will load in place of the ones that failed to work.
Click to expand...
Click to collapse
And now I'm posting here, praying that someone will have some sort of idea what to do. Any help at all would be greatly appreciated,
Fappled
EDIT: Managed to get it working, messing around with the drivers in device manager while in Fastboot mode seemed to work.

Fappled said:
The ADB command appears to be working
Click to expand...
Click to collapse
Feel your pain, I've been thru some pain myself with some weird issue, posted here yesterday. Though, my issue is different from yours, I have some ideas for you.
You say that adb works, so I assume your usb cable & PC are OK here.
I aslo assume that your Device Manager screenshots taken when connected to your phone in device mode (rom running). Don't worry about what you see in Device Manager just yet. Your goal is to make fastboot work, right. Note: Adb works in recovery mode and device mode, but not in fastboot mode. Fastboot works only in fastboot mode.
You could try this, put your phone in fastboot mode, then connect to your PC. Now, see what in your Device Manager. In my case, the phone is under Android Device>Android Bootloader Interface and I use Google driver. Then, try "fastboot devices" to see if your phone is detected.
If not, play with the driver in Device Manager (uninstall, rescan, install another). No need to unplug the phone. After the driver changed, see your Device Manager changed, and then try "fastboot devices".
I played with the driver changing a few time and got fastboot to work. I hope you get it to work too.