Develop Bugs

Fastboot No Devices Found

So, I have found a couple other posts on this issue but none of their solutions have worked for me.
Ill start with the set up I am currently on:
-Stock Official Android N (US Unlocked)
-Firmware 2.28.617.8
-T-Mobile with CID changed to run US unlocked
-S-off and unlocked
-Using windows 10 with ABD Fast boot file (not sdk)
So I have the drivers installed. Originally I was just using the HTC sync software drivers but moved to drivers I found in a forum post here, which unfortunately did not work.
USB Debug is checked.
My phone shows as connected and I can run ADB Devices and see it in the list until I ADB reboot bootloader. Once it is booted into bootloader ADB no longer sees the phone. Checking device manager shows that the phone is connected with no exclamation mark or question mark next to it.
I have restarted and reinstalled several times with no luck. I even run a usb bootable copy of Linux Mint hoping that it may just be an MS issue but I have the same problem on Linux whether I sudo or not.
Since I have had the phone ADB has worked whether in fastboot or not. It was only until I ran the official RUU and upgraded to Android N that it has stopped working. If I am not mistaken, in MM there was a popup when you had USB Debug enabled and connected to a pc that asked if you wanted to use that pc (or something like that). I am not seeing that pop in N.
Any help would be greatly appreciated as I would really like to get twrp installed and rooted.
Thanks all.

I have spent the past couple hours fiddling around with this and thought I would add and update.
I downloaded and installed Android SDK, updating everything and adding the Google USB drivers. Unfortunately this did not work. Same result.
I did however just find that if I go to the stock recovery and select the Apply update from ADB option, the device is recognized again in my cmd window.
Am I missing something. Is there a new procedure for flashing things like twrp with command lines? All the forums still show Fastboot as the method.
Anyway, that is it for my feeble brain for the night.

Sometimes it helps to use the usbdeview tool. It removes the link to drivers and gives you a clean start. Worked earlier for me. File is attached.

@Ludolf71
I gave that a try but it doesn't seem to help. Looking through the list of drivers there doesn't seem to be any driver conflicts and the only instances that show up on the list relating to my phone are the vendor drivers and the port that the phone is on.
At this point I am lost. I have spent hours reading forums and searching around for a solution. I am not sure what might have changed between running MM and updating to the current HTC RUU. Prior to installing the current RUU everything worked fine.
Looking though dev options there is an option to revoke USB debugging authorizations, is there a way to see the list of authorized devices? Also, I swear that in MM when I had debug on I had to authorize my pc when I plugged it in the first time after a fresh flash. Is that not the case anymore or is that option somewhere hidden that I am missing?
Has anyone put together an adb zip specific to the HTC 10 and the current firmware? Do to changes in the Android N firmware could this be the cause?
I tried Andoid SDK last night but I have to admit I am not very well versed in their software so I may not done it correctly. I have been modding and flashing custom rom since the poorly name MyTouch but have so far gotten by without having to use Google software suite.
Thanks all for the help.

Tried installing the HTC Sync Manager? That shall provide you with the correct drivers.

Yeah, I have installed and reinstalled the Sync manager several times. Like I said the phone is recognized using ADB devices while booted to OS but the second I adb reboot bootloader it is no longer seen.

I keep coming back to authorizations and i think this may be the issue. I see the option to revoke but I am not getting any options to authorize the PC I am using.

Solved: I was using the wrong command line as pointed out by xunholyx in another thread. Thanks @Ludolf71 for helping as well. Felling pretty dumb about this one

And why not help others with the same problem with provideing the link?
I'm stuck several hours now with that problem.
---------- Post added at 06:40 PM ---------- Previous post was at 06:40 PM ----------
And why not help others with the same problem with provideing the link?
I'm stuck several hours now with that problem.

Huawei W1 no connection with pc

I have no idea what I do wrong, but this is what I tried:
I enabled adb mode on my Chinese watch
The watch is in fastboot mode
I installed all drivers, pdanet didn't work (no usb connected)
Once I put my cable in my laptop and it said: USB error, try again later or something like that?
no adb response in the commands. just blank... in the devices list, there is no sign of my watch...
It charges normally. I could really use your help
Somehow I found the chinese wear OS so I can use it. at least that is something. Is there any way to get in in English or Dutch without adb?

My other laptop seems to see a 'unknown usb device'. no adb device found...
I have no idea... maybe it's due to the unofficial cable?

I bought an expensive cable, the original, but no laptop can see the watch (windows 10 and windows 7)
The old cable is some sort of ok with the windows 7. I get an error 43 in devicemanagement.
Please help... I have no idea what I can do now...

https://forum.xda-developers.com/showpost.php?p=73472794&postcount=15
I've posted this many times in the various Huawei forums and it has worked for everyone so far.
First, remove all other drivers using USBDeview.
http://www.nirsoft.net/utils/usb_devices_view.html
Then use this tutorial to manually install the Google USB driver.
http://visualgdb.com/KB/usbdebug-manual/
Good luck!
edit - here is a fool proof method.
https://forum.xda-developers.com/an.../live-iso-adb-fastboot-driver-issues-t3526755
Click to expand...
Click to collapse
https://forum.xda-developers.com/showpost.php?p=71653349&postcount=12
I've posted this many times in the various Huawei forums and it has worked for everyone so far.
First, remove all other drivers using USBDeview.
http://www.nirsoft.net/utils/usb_devices_view.html
Then use this tutorial to manually install the Google USB driver.
http://visualgdb.com/KB/usbdebug-manual/
Click to expand...
Click to collapse

i am also bugged with this.
the win7-pc says unknown usb device detected. i turned dev mode and adb on.
then i tried to manually install the driver from the android sdk. when i try to select the driver windows says there were no driver found (but the driver is there) and i should make sure that the driver is written for x64-systems. WTF?
and even the watch does not charge wenn via usb 2.0 or 3.0 connected - but its connected cause of the message from the pc.
in the device manager the watch is listed as unknown device.

that's exactly my problem...
I have done everything. I'll try to connect it to my linux pc, I got an old laptop with ubuntu or something like that (haven't used it in ages)
maybe that will do the trick. I installed everything manually. my win10 can see an unknown device as well... but that's about it...

maybe dev mode is not working on some watches even when its enabled. or it has something to do with the 2.0 Version auf AW and it affects not every watch.

Its funny. I've been trying to get my HW1 watch to connect to my PC for a year now. Have tried numerous different cables and the original that came with my watch didn't work. Different PCs haven't worked either. Unless I'm that unlucky with all these OEM cables or the ADB debugging toggle really doesn't work for USB connections. It works just fine for bluetooth and wifi, neither of which allow you to unlock the bootloader. Guess I've got to wait for the next update manually and try again.

Cannot install USB drivers for Razer phone on Win10

Howdy,
I'm trying to get my phone unlocked and rooted. As the first step, of course, I'm trying to get the Google USB drivers to install, but I simply can't. I feel like I'm the only person having this issue, though because I cannot find a solution... The steps I'm following:
Downloaded the latest driver zip from Google
Open Device Manager
Expand Portable Devices
Right-click on the Phone entry (notice, that's the entry, "Phone". Not Razer.)
Choose Update Drivers
Browse my way to the drivers folder and click Next.
Windows then returns immediately "The best drivers for your device are already installed", and shows that it's an MTP USB Device.
I noticed that under USB devices, there's an ADB Interface device listed, and I get the same results when I try to update that, too (excepting it says it's an "ADB Interface" device, of course). I have tried uninstalling both devices to get the drivers to install, but no such. I've rebooted both phone and computer as well.
On the phone, USB Debugging is turned on, and USB mode is set to MTP file transfer.
Please help!

Figured it out...
tkarakashian said:
Howdy,
I'm trying to get my phone unlocked and rooted. As the first step, of course, I'm trying to get the Google USB drivers to install, but I simply can't. I feel like I'm the only person having this issue, though because I cannot find a solution... The steps I'm following:
Click to expand...
Click to collapse
In case anyone else is seeing the same issues, I wanted to put my resolution up: I'd been trying to install the drivers with the Razer booted. On a whim, I rebooted it into Download Mode using "adb reboot bootloader". Once there, I had an Android Device listed in Device Manager. I ran the driver update wizard, and installed the "USB ADB Interface" option from the choices presented. I was then able to run the OEM unlock command and received the confirmation prompt on the Razer. Yay!
Now, since it's been so long, I've got to re-back-up everything so I can actually do this thing. LOL

Here's the PDF from Razer's how to install a factory image over PC guide. It explains how to do it all
s3.amazonaws(.)com/cheryl-factory-images/How_to_Install_Android_Fastboot_Drivers_on_Windows.pdf (remove parantheses)

Pixel 2 XL isn't detected on my PC [help]

After upgrading to Android Q suddenly my pc can't recognize my pixel as a android device also i can't connect any wired things such as dongle jack or USB Transfer (USB charging options disappeared).
Planning to downgrade to Pie but the problem is my device can't be detected on my pc. Any solutions? Thanks

If you're using a Microsoft Windows machine, I would suggest uninstalling any "Android" drivers from the Device Manager. Then restart the PC, then turn off "USB debugging" and back on for the Pixel, and even "Revoke authorizations" in hopes that it will re-alert & request another authorization and, therefore, verify it being connected and detected on the PC....
After all that -- or if you can only enter in Bootloader Mode -- type the command "fastboot devices" and say here what it outputs. If anything, while in Bootloader Mode, do what I previously said, but look for anything "Android" and "Bootloader" and uninstall those device drivers...
Good luck and hope this helps!

simplepinoi177 said:
If you're using a Microsoft Windows machine, I would suggest uninstalling any "Android" drivers from the Device Manager. Then restart the PC, then turn off "USB debugging" and back on for the Pixel, and even "Revoke authorizations" in hopes that it will re-alert & request another authorization and, therefore, verify it being connected and detected on the PC....
After all that -- or if you can only enter in Bootloader Mode -- type the command "fastboot devices" and say here what it outputs. If anything, while in Bootloader Mode, do what I previously said, but look for anything "Android" and "Bootloader" and uninstall those device drivers...
Good luck and hope this helps!
Click to expand...
Click to collapse
Thanks for replying, i already tried to uninstall android driver, but when i try to reconnect, my pc recognize my device as "unknown device"

blancheSX said:
Thanks for replying, i already tried to uninstall android driver, but when i try to reconnect, my pc recognize my device as "unknown device"
Click to expand...
Click to collapse
what about the other things I suggested?
Or, so it can be clearer, are you in the System/OS when plugging/reconnecting or in Bootloader Mode?

I ran across the same issue..I followed this video to get rid of the old USB drivers and updated to the new Android driver.. Now my window 10 recognize my pixel 2xl storage completely.
https://youtu.be/Zc_dhxc8iJU

I have this issue before, and after all i got my phone detected. But when i flash it, it say unbootable slot in fastboot screen. After couple onf time, it cant be flashed again and die.... My phone cant turn on in fastboot mode again, it bricked

I had to use the USB dongle to connect a flashdrive to my phone, wait for it to recognize the drive, then unplug the drive and dongle... Then connect phone to PC... Profit!

If anyone is still having the issue of PC not recognizing device in fastboot, please be sure you have UNinstalled the older version(s) of SDK Tools from yhour PC and make sure to INSTALL the latest versions.
You can find the latest version linked in the 9x guide in my signature.
Also, make sure you have both older and newer USB cables handy. The Pixel has a nasty reputation for being finicky with USB cables, try diff cables and different USB ports on your PC.
There is also a basic troubleshooting guide in the same link in my sig.
Best regards!

simplepinoi177 said:
what about the other things I suggested?
Or, so it can be clearer, are you in the System/OS when plugging/reconnecting or in Bootloader Mode?
Click to expand...
Click to collapse
i did in 2 conditions, first one is my device turned On (adb is not detected) also 2nd one is my device in bootloader mode (fastboot devices is not detected too)
been trying to update my driver but i always got (error code : 10, device cannot started) i dunno what to do right now

dallas90733 said:
I ran across the same issue..I followed this video to get rid of the old USB drivers and updated to the new Android driver.. Now my window 10 recognize my pixel 2xl storage completely.
https://youtu.be/Zc_dhxc8iJU
Click to expand...
Click to collapse
i tried those tuturial and ended in error code : 10, device cannot started.

SageWilliams said:
I had to use the USB dongle to connect a flashdrive to my phone, wait for it to recognize the drive, then unplug the drive and dongle... Then connect phone to PC... Profit!
Click to expand...
Click to collapse
whenever i try to connect a flashdrive with my dongle, there is no option or something, it's just usb charging option appeared.

blancheSX said:
i did in 2 conditions, first one is my device turned On (adb is not detected) also 2nd one is my device in bootloader mode (fastboot devices is not detected too)
been trying to update my driver but i always got (error code : 10, device cannot started) i dunno what to do right now
Click to expand...
Click to collapse
blancheSX said:
whenever i try to connect a flashdrive with my dongle, there is no option or something, it's just usb charging option appeared.
Click to expand...
Click to collapse
So…without you being too definitive…it seems that you’re able to get into your OS…
What I’d like you to do is uninstall and remove Google usb drivers on your computer. Then, download it again HERE: https://dl-ssl.google.com/android/repository/latest_usb_driver_windows.zip . And, in case things don’t work out this time around, if you can please save the (.zip) file on your Desktop or root folder (usually the C: drive). I might have you direct the device detected to the files in this .zip directly.
Then, after installing the USB drivers, I’d like you to uninstall and remove any/all things that are named “platform-tools” (so there will only be ONE "platform-tools" after you re-download it in this step) on the whole device. After, I’d like you to download the latest Windows version HERE: https://developer.android.com/studio/releases/platform-tools . Again, to simplify things, if you can extract it either in your Desktop or root folder (C: drive).
Again, like I mentioned before, I would like for your device to request authorization for your computer again, so if you can please go to the Developers option, and select “Revoke USB debugging authorizations” as well as double-checking you have "USB debugging" enabled…
Only THEN, once these two things are extracted and installed (as is the case in the first step) and you revoked the authorizations, can you plug in your device and USB cord. Watch your phone/device, as it will ask for authorization to connect to your computer, and you’ll have to make sure the box is checked that says “don’t ask this every time” or “remember this device” – I can’t recall off-hand – and then make sure to “Allow” it. By doing this, you can be sure that your computer and device are talking correctly.
*One suggestion that isn’t mandatory is that you select where it says “USB charging” and change it to “MTP” or “file-sharing” (sorry, again, I can’t recall specifically off the top of my head…)
If all things are working well, if you can open up a command prompt (a.k.a. “cmd”, and also make sure you are running it “As an administrator”) and direct it to the platform-tools directory (hopefully you followed my suggestion and kept it simple so it will either be at the root “C:\” or on your Desktop “C:\Users\[username]\Desktop” so it won't be too difficult directing it there...), and run the commands
Code:
adb devices
and
Code:
fastboot --version
.
Hopefully, if you do all of these things, it might get things reset and working from a stable established set up.
If it somewhat works, but the device in your "Device Manager" is showing up something "funky", then it'll take a rather nuanced Windows troubleshooting technique to resolve where I would have you correct the wrong entry/driver in the "Device Manager" and have it specifically point to one of the contents of the .zip files; shown prior.... We'll tackle that if need be and if all this initial beginning troubleshooting doesn't pan out...
Let me/us know how it works out, good luck, and hope this all ends up being helpful…

simplepinoi177 said:
So…without you being too definitive…it seems that you’re able to get into your OS…
What I’d like you to do is uninstall and remove Google usb drivers on your computer. Then, download it again HERE: https://dl-ssl.google.com/android/repository/latest_usb_driver_windows.zip . And, in case things don’t work out this time around, if you can please save the (.zip) file on your Desktop or root folder (usually the C: drive). I might have you direct the device detected to the files in this .zip directly.
Then, after installing the USB drivers, I’d like you to uninstall and remove any/all things that are named “platform-tools” (so there will only be ONE "platform-tools" after you re-download it in this step) on the whole device. After, I’d like you to download the latest Windows version HERE: https://developer.android.com/studio/releases/platform-tools . Again, to simplify things, if you can extract it either in your Desktop or root folder (C: drive).
Again, like I mentioned before, I would like for your device to request authorization for your computer again, so if you can please go to the Developers option, and select “Revoke USB debugging authorizations” as well as double-checking you have "USB debugging" enabled…
Click to expand...
Click to collapse
thanks for ur explanation, and i'm sure i already did this 100% as you mentioned before. looking for solution and i found this at pixel community thread : https://support.google.com/pixelphone/thread/14477635?hl=en
and btw when i try to disable and back to enable (again) USB debugging, there's no pop up or something like that, just nothing appear. so i just realized why i got error code : 10 is just because my phone still not detected by PC also i tried in other computer (with windows 8.1 installed) my device is got detected but as "device descriptor request failed" not as an android device. Hopefully next update google will fix this "bug". Once again thank you very much

blancheSX said:
thanks for ur explanation, and i'm sure i already did this 100% as you mentioned before. looking for solution and i found this at pixel community thread : https://support.google.com/pixelphone/thread/14477635?hl=en
and btw when i try to disable and back to enable (again) USB debugging, there's no pop up or something like that, just nothing appear. so i just realized why i got error code : 10 is just because my phone still not detected by PC also i tried in other computer (with windows 8.1 installed) my device is got detected but as "device descriptor request failed" not as an android device. Hopefully next update google will fix this "bug". Once again thank you very much
Click to expand...
Click to collapse
Yeah...I figured as much...I was just making sure to lay down the "ground work" before proceeding...
If you're still willing....what I had planned next was to walk you through manually updating/"editing" the driver (on the PC) to directly look at the Google usb drivers specifically to try and get around the whole "device descriptor" and other (detection) error codes.......

Might want to try uninstall the SDK toolkit, reboot PC, then install the latest SDK toolskit.
Also having both USB 2.0 and 3.0 cables saved me more than once, and is a known thing on the 2XL.

My tablet is stuck as an unrecognised USB device by Windows 10.

Hi there. Sorry if I sound dumb. I'm new to this whole thing and this was supposed to be my first experience with flashing custom ROMs and stuff like that. I was planning to get ready to install LineageOS on my Nexus 7 using a Windows 10 PC. Unfortunately, things quickly went south.
My first roadblock was the tablet not being recognised by fastboot. I checked online for a bit and from what I could gather, the solution was to install the Google USB drivers using device manager. I went into device manager, right clicked my Nexus 7 in "portable devices", selected "update driver" and chose the Google USB driver I downloaded from the official Android developers website. I'm not sure if this is relevant but the tablet was in fastboot mode when I did this. From that point on, my tablet is no longer recognised and it just keeps saying "device descriptor request failed" whether it's in fastboot or normal mode, and regardless of which USB mode I choose.
I tried uninstalling the driver, factory resetting, WugFresh NRT, and using different cables and USB ports. I checked for all sorts of solutions but they either didn't help or they require an unlocked bootloader (which was the very first thing I tried to do before finding out I needed to install the driver for fastboot to recognise the Nexus 7). Does anyone here know of a solution to get this working again? I'm completely stumped on what to do.
EDIT: I tested with a Chromebook and an old Windows 7 PC I had lying around. Neither could detect my Nexus 7 and the W7 PC even said it failed to install the driver as soon as I plugged it in. It seems that the driver update screwed up my tablet somehow and I have no idea how to fix it. I really don't understand how this could have happened considering I followed Google's own instructions for updating the driver.
Does anyone perhaps have a copy of the OEM driver for the 2013 N7 Wi-Fi (flo) model? ASUS don't distribute the driver on their website anymore and I'm out of ideas.

BenSkylake said:
my tablet is no longer recognised and it just keeps saying "device descriptor request failed" whether it's in fastboot or normal mode
Click to expand...
Click to collapse
Review this thread and the solutions.
After you have fixed it, you can easily install a new custom ROM with two steps:
RESTOCK - installs USB drivers and unlocks it, latest official stock ROM
CROSS - various custom ROMs, 1-click installation, TWRP, incl root

k23m said:
Review this thread and the solutions.
After you have fixed it, you can easily install a new custom ROM with two steps:
RESTOCK - installs USB drivers and unlocks it, latest official stock ROM
CROSS - various custom ROMs, 1-click installation, TWRP, incl root
Click to expand...
Click to collapse
Thanks for the response. I don't think I'll have enough time to try this today but I might as well ask. Do any of these fixes work without needing a USB connection to a PC, or if they do, do they require adb and fastboot to work? Because if so, I won't be able to use them since my USB data connectivity is completely busted no matter what I plug my Nexus into.

k23m said:
Review this thread and the solutions.
After you have fixed it, you can easily install a new custom ROM with two steps:
RESTOCK - installs USB drivers and unlocks it, latest official stock ROM
CROSS - various custom ROMs, 1-click installation, TWRP, incl root
Click to expand...
Click to collapse
I just ran the RESTOCK 1 script and it worked wonders! My tablet's USB connectivity has been fixed and as an added bonus, my bootloader is now unlocked. I'll be continuing the process in Linux on my Pixelbook since it doesn't require any driver installations as far as I know. Thank you so much! You're a life saver!