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Fastboot issues - Can't Get it to Work

I have a Nexus 5, returned to factory specifications (many times) with backup & restore inhibited. I am trying the “very simple” process of unlocking it, without any success. My problem is repeated many times on the web, Fastboot does not work, but ADB does.
I run the following command:
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices
List of devices attached
0315c2d60935c160 device
Then I run the following command:
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>fastboot devices
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>
ADB sees the phone; Fastboot does not.
The solution is well documented on the web: Install new drivers. I have been installing drivers from just about everywhere for the last week without success. With the phone connected, I get this from Device Manager:
Computer
Android Device
Android Composite ADB Interface
The driver information is as follows:
Driver Provider: Google, Inc.
Driver Date: 7/9/2013
Driver Version: 8.0.0.0
Driver Signer: Google, Inc.
Driver Details:
Driver Files:
C:\Windows\System32\Drivers\Winsub.sys (File Version 6.2.9200.16384(Win8_rtm.120725-1247))
C:\Windows\System32\WdfcoInstaller01009.dll(File Version 1.9.7600.16385 (Win7_rtm.090713-1255)
C:\Windows\System32\WinUSBCoInstaller2.dll (File Version 6.1.7600.16385 (win7_rtm.090713-1255))
I am running a Dell XPS-17 I7 laptop with Windows 8 (not 8.1) 64 bit
If I could find a way to unlock without using Fastboot, that would probably be a good solution, but I can’t. And I have absolutely no success at getting Fastboot to work.
I do notice that the Device Manager lists Android Composite ADB interface (ADB works) but noting about a Fastboot interface. Does that mean anything?
Please help I am at my wit’s end.
For what it is worth, I did read all the tutorials here, and the only thing I could figure out was if I have the right drivers everything works fine. I also reviewed the posts here, including "Diagnosing USB Driver and ADB issues in Windows," which discusses ADB (which I have no problem with)

this article helped me out a bunch. http://blog.dantup.com/2012/10/fixing-adb-device-not-found-with-nexus-7-in-recovery-mode/
you'll have to edit the "android_winusb.inf" with the correct hardware id.
in Device Manager make sure you go to "Android Device" > "Android Composite ADB Interface" go to Properties. on the Details tab and then click on the drop down box and select "hardware ids" you might see 2 ids there. i believe the one you'll need is the bottom one. if you only have one. thats fine too.
so, read the article. grab your hardware id and edit your driver. see if it works. you may have to reboot after you edit the driver. hope this works for you.

krdu said:
I have a Nexus 5, returned to factory specifications (many times) with backup & restore inhibited. I am trying the “very simple” process of unlocking it, without any success. My problem is repeated many times on the web, Fastboot does not work, but ADB does.
I run the following command:
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices
List of devices attached
0315c2d60935c160 device
Then I run the following command:
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>fastboot devices
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>
ADB sees the phone; Fastboot does not.
Click to expand...
Click to collapse
OK, please don't be offended, but I have to ask a really dumb question. You aren't running the "fastboot devices" command while in recovery, right? I read the above twice and didn't see where you booted into bootloader after running the "adb devices" command. Unless I'm missing something, fastboot won't find any devices unless you are in the bootloader.

Sounds like you need to boot your phone into fastboot mode. Power off the phone and hold volume down and hit the power button.
Then the fastboot devices command should work and you should be able to unlock the boot-loader then. Unlocking the boot-loader will wipe your phone just so you know.

erikivy said:
OK, please don't be offended, but I have to ask a really dumb question. You aren't running the "fastboot devices" command while in recovery, right? I read the above twice and didn't see where you booted into bootloader after running the "adb devices" command. Unless I'm missing something, fastboot won't find any devices unless you are in the bootloader.
Click to expand...
Click to collapse
Actually, the answer to that question is "Yes, and no." I was not aware that Fastboot only worked in the bootloader, but I could never get it to work there either. However, when I copied the previously posted listings I was not in the bootloader, I was in normal booted mode.
I then went and tried it in the bootloader, to copy listings to post, and here's what I got!
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices (In normal Mode)
List of devices attached
0315c2d60935c160 device
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb reboot bootloader (rebooted to Bootloader)
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices
List of devices attached
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>fastboot devices
0315c2d60935c160 fastboot
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>fastboot oem unlock
...
OKAY [ 41.215s]
finished. total time: 41.215s
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>
As you can see it unlocked the phone but I have absolutely no clue why it unlocked this time and never did before. I hope to God I never have to unlock it again.
Also, it appears that in the bootloader, ADT is NOT working but Fastboot is! (now)

You realize that the two command line interfaces (ADB and fastboot) don't work in the same state, right? ADB is for use in recovery and while booted, whereas fastboot only works in bootloader. It sounds to me like everything is working exactly as it should.
I'm no expert or anything, but I always assumed that they were two different ways to interact with your device while it is in different states. If I'm mistaken, someone please correct me.

krdu said:
Actually, the answer to that question is "Yes, and no." I was not aware that Fastboot only worked in the bootloader, but I could never get it to work there either. However, when I copied the previously posted listings I was not in the bootloader, I was in normal booted mode.
I then went and tried it in the bootloader, to copy listings to post, and here's what I got!
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices (In normal Mode)
List of devices attached
0315c2d60935c160 device
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb reboot bootloader (rebooted to Bootloader)
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>adb devices
List of devices attached
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>fastboot devices
0315c2d60935c160 fastboot
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>fastboot oem unlock
...
OKAY [ 41.215s]
finished. total time: 41.215s
C:\adt-bundle-windows-x86_64-20131030\sdk\platform-tools>
As you can see it unlocked the phone but I have absolutely no clue why it unlocked this time and never did before. I hope to God I never have to unlock it again.
Also, it appears that in the bootloader, ADT is NOT working but Fastboot is! (now)
Click to expand...
Click to collapse
ADB is used in android and the recovery.
Fastboot is used only in the bootloader.

[Completed] fastboot oem unlock returns nothing for Panasonic T40 in Windows 8.1

I want to unlock my phone for installing a ROM and I have setup the Android SDK alongwith all the drivers USB debugging ON, but 'fastboot oem unlock' is resulting in three dots (...) nothing else. Phone keeps displaying the '=>Fastboot mode' text. 'fastboot-windows oem unlock' results as command not recognized. 'adb devices' and 'fastboot devices' both successfully give the serial numbers. 'fastboot oem device-info', 'fastboot flashing get_unlock_ability', 'fastboot flashing unlock' all these also result in three dots (without the text of <waiting for device>).
'flashall' without unlocking failed.
I have also finished trying 3 different data cables with 4 computers. I don't have any linux around me, only Windows 7, 8 and 8.1. Also tried with root and without root (Rooted the phone with Kingo) and tried to run all the commands from the SDK folder as well as administrator.
Please help me with unlocking the oem.
General info: the phone is having Android 4.4.2. Willing to install android 5.1.1. (suggestions for any supporting ROM will cheer me )

Hi,
Try posting your question here:
Android Q&A, Help & Troubleshooting
The experts there may be able to help.
Good luck!

[GUIDE] [T-MOBILE] Unlock bootloader

Warning: This will delete all your data. You'll also see a large warning every time you turn on the device (attached), this disappears in less than a second.
Turn on developer mode
Turn on OEM unlock and USB debugging
Install LG drivers
Windows: http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00120120425
Mac: http://tool.lime.gdms.lge.com/dn/downloader.dev?fileKey=UW00320110909
Type adb devices and authorize your computer on the phone
Type adb reboot bootloader
Type fastboot devices and make sure your phone shows up
Type fastboot oem unlock
Type fastboot getvar all
Should say (bootloader) unlocked:yes
Type fastboot reboot

What's the purpose for an Unlock bootloader?

bhagiratha said:
What's the purpose for an Unlock bootloader?
Click to expand...
Click to collapse
It's the first step to rooting. If you plan to root, wiping your data now may be preferable.

bhagiratha said:
What's the purpose for an Unlock bootloader?
Click to expand...
Click to collapse
At this point, nothing. It's a prelude to rooting.

When I type in fastboot oem unlock, I get < waiting for any device >
And it waits, forever. (well, ok, like 15 minutes until I get impatient and pull the battery)
I'm on windows 10, installed the drivers from this post. When I check the device manage, the phone is listed as Android Bootloader Interface. I try updating the drivers by pointing it to the LG drivers folder, it says drivers are up to date. I've got ADB and OEM unlock both enabled in developer options. I've tried the phone on different USB ports, the cable works fine when the phone is booted normally, I've tried launching minimal adb&fastboot as admin and regular. What am I missing/doing wrong?

heldc said:
When I type in fastboot oem unlock, I get < waiting for any device >
And it waits, forever. (well, ok, like 15 minutes until I get impatient and pull the battery)
I'm on windows 10, installed the drivers from this post. When I check the device manage, the phone is listed as Android Bootloader Interface. I try updating the drivers by pointing it to the LG drivers folder, it says drivers are up to date. I've got ADB and OEM unlock both enabled in developer options. I've tried the phone on different USB ports, the cable works fine when the phone is booted normally, I've tried launching minimal adb&fastboot as admin and regular. What am I missing/doing wrong?
Click to expand...
Click to collapse
Try fastboot devices and reinserting the usb cable. Doesn't make sense that adb sees it but fastboot does not unless it's a different driver. I think fastboot driver differs actually so do that driver too.

Ubuntu
heldc said:
When I type in fastboot oem unlock, I get < waiting for any device >
And it waits, forever. (well, ok, like 15 minutes until I get impatient and pull the battery)
I'm on windows 10, installed the drivers from this post. When I check the device manage, the phone is listed as Android Bootloader Interface. I try updating the drivers by pointing it to the LG drivers folder, it says drivers are up to date. I've got ADB and OEM unlock both enabled in developer options. I've tried the phone on different USB ports, the cable works fine when the phone is booted normally, I've tried launching minimal adb&fastboot as admin and regular. What am I missing/doing wrong?
Click to expand...
Click to collapse
You can also load Ubuntu on a flash drive and boot your computer from the flash drive. Then run the commands.
https://www.ubuntu.com/
Cheers

heldc said:
When I type in fastboot oem unlock, I get < waiting for any device >
And it waits, forever. (well, ok, like 15 minutes until I get impatient and pull the battery)
I'm on windows 10, installed the drivers from this post. When I check the device manage, the phone is listed as Android Bootloader Interface. I try updating the drivers by pointing it to the LG drivers folder, it says drivers are up to date. I've got ADB and OEM unlock both enabled in developer options. I've tried the phone on different USB ports, the cable works fine when the phone is booted normally, I've tried launching minimal adb&fastboot as admin and regular. What am I missing/doing wrong?
Click to expand...
Click to collapse
First be on your c:\
Type in adb devices
If your phones serial comes up type in..
Adb reboot bootloader
Then
Fastboot oem unlock

ADB reboot bootloader boots straight into the OS on AT&T v20 :crying:

cordell12 said:
ADB reboot bootloader boots straight into the OS on AT&T v20 :crying:
Click to expand...
Click to collapse
Do you guys have the oem unlock option at least?

Also what helped me was downloading android studio with the sdk.. It installs android drivers which were necessary for me at least to get past the waiting for device message, windows located the drivers on my c drive and boom... Unlocked Bootloader.. Just saying
Sent from my LG-H918 using XDA-Developers mobile app

wing_addict_usa said:
Do you guys have the oem unlock option at least?
Click to expand...
Click to collapse
yup, even warns us that certain things won't work if we enable it. adb works just fine too

cordell12 said:
yup, even warns us that certain things won't work if we enable it. adb works just fine too
Click to expand...
Click to collapse
Yeah I am really curious if there may still be a way to unlock the bootloader with out AT&T variant. I wish I kept my phone on the Download Mode when I had gotten into it because I wanted to see if by any chance that might actually get fastboot to read the phone..
I'm curious if there's anyone with a T-Mobile variant that has their bootloader unlocked and wants to view their debug logs (specifically last_log/last_kmsg). As I was looking through mine and tried to boot into bootloader these lines were the only things I saw that might have interested me at all. I'm just curious on what the values are on their phone.
Code:
last_log
[ 0.711419] ro.boot.flash.locked=1
[ 0.711784] ro.bootloader=unknown
[ 0.711817] ro.oem_unlock_supported=1
last_kmsg
<6>[ 1.077087 / 01-01 00:00:01.069][3] [70] SW3800_Authentication [vendor code: 1]
<6>[ 1.077120 / 01-01 00:00:01.069][3] [110] set_dload_mode: download_mode:0

wing_addict_usa said:
It's the first step to rooting. If you plan to root, wiping your data now may be preferable.
Click to expand...
Click to collapse
It's quite possible the process of rooting will wipe the phone anyway.

twistedvip said:
Yeah I am really curious if there may still be a way to unlock the bootloader with out AT&T variant. I wish I kept my phone on the Download Mode when I had gotten into it because I wanted to see if by any chance that might actually get fastboot to read the phone..
I'm curious if there's anyone with a T-Mobile variant that has their bootloader unlocked and wants to view their debug logs (specifically last_log/last_kmsg). As I was looking through mine and tried to boot into bootloader these lines were the only things I saw that might have interested me at all. I'm just curious on what the values are on their phone.
Click to expand...
Click to collapse
power device off, hold volume up and keep it down and plug in USB cord while it's connected to PC. I tried fastboot from download mode though. the logs do look interesting, wonder what a T-MOBILE device says

Double0EK said:
First be on your c:\
Type in adb devices
If your phones serial comes up type in..
Adb reboot bootloader
Then
Fastboot oem unlock
Click to expand...
Click to collapse
Yup, I did that. And then I get an error. Well, not an error, just a lack of response. fastboot devices returns nothing. I'm currently downloading the full sdk, on the theory that perhaps it's a problem with the installation of 'minimal adb and fastboot' I have.
---------- Post added at 08:07 PM ---------- Previous post was at 07:36 PM ----------
manufan721 said:
Also what helped me was downloading android studio with the sdk.. It installs android drivers which were necessary for me at least to get past the waiting for device message, windows located the drivers on my c drive and boom... Unlocked Bootloader.. Just saying
Sent from my LG-H918 using XDA-Developers mobile app
Click to expand...
Click to collapse
Did you do anything specific after installing Android Studio to get it to install the drivers? Cos I've installed Android Studio, but am still having the same problem-fastboot devices returns nothing, and fastboot oem unlock hangs on <waiting for device>. I went into device manager and had it search the entire C: for drivers for the android bootloader interface, and it gave the same 'already up to date drivers' message as before I installed Android Studio.
EDIT- Even after installing the Google usb driver, no luck. Giving up for the weekend.

I'm a newbie, may I know have to fastboot from download mode?

having same issue just hangs at Fastboot oem unlock if anybody can help thanks in advance

twistedvip said:
Yeah I am really curious if there may still be a way to unlock the bootloader with out AT&T variant. I wish I kept my phone on the Download Mode when I had gotten into it because I wanted to see if by any chance that might actually get fastboot to read the phone..
I'm curious if there's anyone with a T-Mobile variant that has their bootloader unlocked and wants to view their debug logs (specifically last_log/last_kmsg). As I was looking through mine and tried to boot into bootloader these lines were the only things I saw that might have interested me at all. I'm just curious on what the values are on their phone.
Code:
last_log
[ 0.711419] ro.boot.flash.locked=1
[ 0.711784] ro.bootloader=unknown
[ 0.711817] ro.oem_unlock_supported=1
last_kmsg
<6>[ 1.077087 / 01-01 00:00:01.069][3] [70] SW3800_Authentication [vendor code: 1]
<6>[ 1.077120 / 01-01 00:00:01.069][3] [110] set_dload_mode: download_mode:0
Click to expand...
Click to collapse
[ 0.711817] ro.oem_unlock_supported=1 1=YES
did some digging into last_kmsg while trying to boot into bootloader (AT&T device) and found a reason it may not be allowing it.
http://forum.xda-developers.com/showthread.php?t=2708466
Its a start :good:
of course we need root in order to dd anything

LG issued a new driver update for the v20. Driver version is 4.1.1+. You can get the driver from the website.

Fastboot unlock doesn't work on brand new 4a.

Hi guys,
Bit stuck, couldnt find a google thingy to help me out.
Setup:
W10 (also tried on Arch)
Latest version of platform tools
Tried multiple cables
No hub between computer and phone, straight to back of the motherboard
OEM Unlock > Enabled
USB Debugging > Authorised and remembered
adb devices gives a valid output
adb reboot bootloader > reloads to Fastboot Mode (the one with the red exclamation mark)
> bootloader version s5-0.2-6539975
NOS Production: yes
Device state: locked
on computer:
fastboot flashing unlock
< waiting for any device >
No prompt on phone, at all.
Also not working in fastbootd menu.
I followed along with the guides I found online, but no luck. Am I forgetting something stupid?
Any help would be appreciated.
Thanks ever so kindly.

Hi, I have had similar in the past when not using the latest ADB version.
Just double check you are up to date

To add: fastboot devices does not give output, however the computer does chime when connected.

minty1978 said:
Hi, I have had similar in the past when not using the latest ADB version.
Just double check you are up to date
Click to expand...
Click to collapse
Yeah, I'm on version 30.0.5 (November 2020)

I just had to ask nicely.
sudo fastboot flashing unlock worked.
This can be closed:
Lesson: run fastboot as root or as admin.

What Am I Doing Wrong? (Rooting/Bootloader Unlocking)

Hopefully someone here can help me through my problem,
Device Details: BLU G60/BLU VIVO X6
Android 9/Pie
OEM Unlocking: Allowed
USB Debugging: Enabled
Hey, I'm pretty new to this way of customizing my phone (adb, root, roms etc), and I'm trying to root my phone with Magisk. I have a patched boot.img, my bootloader is allowed to be unlocked and I'm doing exactly what the root guide says (https://www.mobilewithdrivers.com/magisk-root/blu-g60-64gb-3gb-ram) but it wont work, I keep getting different errors and I see all my fellow droid users so happy with their rooted devices, I want to root mine too. So what I'm asking is; Can someone with an actual brain (Mine wont work) to try and help me out or walk me through step-by-step?
Thanks for reading!
Some of the issues I have:
"adb reboot booter" and "fastboot reboot bootloader" both reboot the device but in the top left corner it says "fastboot mode" and just freezes, when I do any command it just says "device null" but when I reconnect the USB cable, it just powers off.
"fastboot flashing unlock" results in "FAILED (remote: Not implemet.)" Yes, spelt like that.
"fastboot oem unlock" says, unkown cmd...

Wrong driver in use. Use the one provided by BLU suitable to your phone.

i couldnt find any drivers for the exact device, only google ones...
any ideas?

If you have a mac, you could try that. They usually don't require drivers.