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Nexus doesn't show up when connected to PC via USB

Hi, I've got a Nexus S 4g. I recently tried to flash it with the stock Jelly Bean image from Google's developer page - developers.google.com/android/nexus/images. While I was running flash-all.sh, the flash appeared to finish, and my terminal just said <waiting for device>. The device does boot up, and is functional, however, I can't get this thing to connect to any of my PCs via USB.
I've plugged it into my 12.10 Ubuntu laptop, and run lsusb. The device isn't listed at all, so adb doesn't work. I've also booted the phone into fastboot, and lsusb still doesn't list it (so fastboot devices doesn't list anything either). I've also plugged it into my Arch box, and tried the same steps with the same results. Before I flashed the phone, I was able to debug just fine on both machines.
Has anyone seen this behavior before? Is there any way to fix it? I've spent a bunch of time searching around for this problem, and haven't seen much. Thanks.

Well, crap. It looks like I flashed the wrong image to my phone. I've got a Nexus S 4G (d720), and it appears I flashed the i9020 image. That's what has probably caused my issue. Does anyone know if there's any way to recover from this?

Rephrase: Do you have unlocked bootloader?
Do you have adb and fastboot drivers installed?
Do you have debugging enabled in devoper settings?

kwibis said:
Rephrase: Do you have unlocked bootloader?
Do you have adb and fastboot drivers installed?
Do you have debugging enabled in devoper settings?
Click to expand...
Click to collapse
no need to have debbuging mode on

kwibis said:
Rephrase: Do you have unlocked bootloader?
Click to expand...
Click to collapse
Yes
kwibis said:
Do you have adb and fastboot drivers installed?
Click to expand...
Click to collapse
Yes
kwibis said:
Do you have debugging enabled in devoper settings?
Click to expand...
Click to collapse
Yes
The problem is that I flashed the wrong image to my device. I'm pretty sure it's hosed. The phone works fine - it boots up, I can get on wifi, but I just can't connect via USB. The image I flashed must have different USB drivers than what my device has. It looks like I'm stuck with it, or I will see if someone can "unbrick" it, and flash the proper image to it.

Well since you have unlocked bootloader I guess you have custom recovery and are rooted as well. You can download a custom rom, safe your app data with titanium backup, factory reset and wipe cache in recovery and flash proper rom. Then the drivers should work again and you can flash the correct image if wanted.
Sent from my Nexus S

Locked bootloader but with TWR and rooted.

Two days ago, I unlocked my bootloader and it wiped everything. After that, I installed TWR and rooted the device with a toolkit.
Now I don’t know what went wrong, but I would like to flash CWM recovery instead of TWR, but...
it’s now showing that my bootloader is LOCKED.
And I cannot unlock after I’ve tried using adb, cmd, or the toolkit.
I will hold Vol Up+power to enter fastboot and as soon as I hit “unlock bootloader” or enter “fastboot oem unlock” in command, the phone immediately starts into TWR.
Without an unlocked bootloader, I cannot flash anything via the bootloader.
Any help would be appreciated. Thank you!

Turn the phone completely off. Hold volume up + power, plug the phone in via USB (ensure that you have the drivers installed for the phone)
fastboot oem unlock
fastboot reboot
then go back into volume up + power (fastboot mode)..... fastboot flash recovery <recovery-name>.img while the recovery file is in the fastboot.exe folder. then boot into recovery.

zephiK said:
Turn the phone completely off. Hold volume up + power, plug the phone in via USB (ensure that you have the drivers installed for the phone)
fastboot oem unlock
fastboot reboot
Click to expand...
Click to collapse
You see, I cannot even get to the part where I reboot the phone myself because the phone automically does it for me and jumps itself into TWR recovery and does not unlock the bootloader for me.
It takes less than a second from when i run the command "fastboot oem unlock" to when the phone reboots. Then it take about 15 seconds to get to the TWR recovery.
The only drivers I've installed on my Win8 (tried Win 7 as well) are these:
http://forum.xda-developers.com/showthread.php?t=2588979
Any other drivers I'm missing? I do not want to do download the full SDK.

lemonspeakers said:
You see, I cannot even get to the part where I reboot the phone myself because the phone automically does it for me and jumps itself into TWR recovery and does not unlock the bootloader for me.
It takes less than a second from when i run the command "fastboot oem unlock" to when the phone reboots. Then it take about 15 seconds to get to the TWR recovery.
The only drivers I've installed on my Win8 (tried Win 7 as well) are these:
http://forum.xda-developers.com/showthread.php?t=2588979
Any other drivers I'm missing? I do not want to do download the full SDK.
Click to expand...
Click to collapse
I actually had that happen to me too. When I typed fastboot oem unlock, my phone just instantly rebooted. But the bootloader was still unlocked. Use http://forum.xda-developers.com/showthread.php?t=2788632 and start from scratch. Use Universal Naked Drivers 0.73, they work amazing. I had these drivers installed before so I didn't even need to install drivers.

zephiK said:
I actually had that happen to me too. When I typed fastboot oem unlock, my phone just instantly rebooted. But the bootloader was still unlocked. Use http://forum.xda-developers.com/showthread.php?t=2788632 and start from scratch. Use Universal Naked Drivers 0.73, they work amazing. I had these drivers installed before so I didn't even need to install drivers.
Click to expand...
Click to collapse
I tried your method but I keep restarting to the twrp recovery.
and specific thing that made the device unlock the bootloader. Fastboot OEM unlock just restarts my device
I have the correct drivers the win 7 pc does recognize the device in fastboot mode.
thank you

tkdsl said:
I tried your method but I keep restarting to the twrp recovery.
and specific thing that made the device unlock the bootloader. Fastboot OEM unlock just restarts my device
I have the correct drivers the win 7 pc does recognize the device in fastboot mode.
thank you
Click to expand...
Click to collapse
Silly to ask, but you unchecked the cm update in dev settings and enabled debugging?
Personally, my second lappy didn't even list the device in fastboot, but the commands still worked.
I would just boot into fastboot and run the all the commands in series.

teh roxxorz said:
Silly to ask, but you unchecked the cm update in dev settings and enabled debugging?
Personally, my second lappy didn't even list the device in fastboot, but the commands still worked.
I would just boot into fastboot and run the all the commands in series.
Click to expand...
Click to collapse
I've already tried this on 3 different computers.
I don't see how having dev mode would affect bootloader if I never boot into the OS.
Someone had the same issue and had found a fix. I will give this tampering fix a try:
http://forum.xda-developers.com/oneplus-one/help/locked-bootloader-totally-locked-t2817735

lemonspeakers said:
Two days ago, I unlocked my bootloader and it wiped everything. After that, I installed TWR and rooted the device with a toolkit.
Now I don’t know what went wrong, but I would like to flash CWM recovery instead of TWR, but...
it’s now showing that my bootloader is LOCKED.
And I cannot unlock after I’ve tried using adb, cmd, or the toolkit.
I will hold Vol Up+power to enter fastboot and as soon as I hit “unlock bootloader” or enter “fastboot oem unlock” in command, the phone immediately starts into TWR.
Without an unlocked bootloader, I cannot flash anything via the bootloader.
Any help would be appreciated. Thank you!
Click to expand...
Click to collapse
Hi lemonspeakers,
sadly I don't have a solution, but the same problem.
Current state:
Bootloader locked
TWRP installed
no root
Sending "fastboot oem unlock" causes reboot to recovery.
Besides that the phone is fully working. (My friends thing I'm crazy because I'm sad about a fully working, "normal" phone
I hope somebody have suggestions to fix the issue.
Update:
I've just seen the tamering fix thread and I'm going to try that, too,
Did it work for you?

Dr.Linde said:
Hi lemonspeakers,
sadly I don't have a solution, but the same problem.
Current state:
Bootloader locked
TWRP installed
no root
Sending "fastboot oem unlock" causes reboot to recovery.
Besides that the phone is fully working. (My friends thing I'm crazy because I'm sad about a fully working, "normal" phone
I hope somebody have suggestions to fix the issue.
Update:
I've just seen the tamering fix thread and I'm going to try that, too,
Did it work for you?
Click to expand...
Click to collapse
I haven't tried it because i'm out on vacation for a few days. I didn't want to bring my new oneplus with me.
If you tried that fix, let me know how it went. thanks!

lemonspeakers said:
I haven't tried it because i'm out on vacation for a few days. I didn't want to bring my new oneplus with me.
If you tried that fix, let me know how it went. thanks!
Click to expand...
Click to collapse
Actually, I tried it and... It works!
I flashed the script, than used this guide (again):
http://forum.xda-developers.com/showthread.php?t=2788632
Than it looked like the only improvement is, that the bootloader is now unlocked. Root didn't work.
I could fix that by going to Recovery, factory reset, reinstall SuperSU an reboot. My phone now is finally rooted.
I think the factory reset part is strange, but I'm so glad I now have a rooted OPO.
When you try it, please let me know if you also have to do a factory reset.

Dr.Linde said:
Actually, I tried it and... It works!
I flashed the script, than used this guide (again):
http://forum.xda-developers.com/showthread.php?t=2788632
Than it looked like the only improvement is, that the bootloader is now unlocked. Root didn't work.
I could fix that by going to Recovery, factory reset, reinstall SuperSU an reboot. My phone now is finally rooted.
I think the factory reset part is strange, but I'm so glad I now have a rooted OPO.
When you try it, please let me know if you also have to do a factory reset.
Click to expand...
Click to collapse
That is sooo SCHWEET! I can't wait to try it on my phone when I get home! Woot!

Can't boot into recovery. any idea if this can be fixed?

I tried to root my Opo, but it started to go wrong after i flashed it. It went to reboot into TWRP, but all that happened was it crashed. the 1+ logo comes on and then the screen goes blank. This Happens all the time when I try a "fastboot oem unlock", factory reset, or a boot recovery.. the fastboot does work, but the device is also locked and i can't do a recovery due to this. I tried to do the root tutorial on youtube by C4ETech.. help please!

@nickizm, when you boot to fastboot and enter the command "fastboot devices", can you see your device listed on the screen?

Thanks for the reply.. The fastboot work fines apart from when I try to unlock the devices and it reboots into recovery, it crashes and doesn't unlock.. the rest of the phone works fine apart from the recovery... my bootloader is also locked and I can't unlock it due to crashing
(bootloader) Device tampered: true
(bootloader) Device unlocked: false
(bootloader) Charger screem enabled: false

I can't be certain but I'm pretty sure I read a similar issue to this a few days ago that was caused by not having the latest fastboot software, the user resolved it by downloading the latest android sdk and trying again.
Worth a shot.
Hope it helps.
Powered by Bacon

I had trouble when I first tried to root. Twrp wouldn't install. I ran some command which loaded it up but didn't install it on the phone, I was the able to root my phone.
Make sure you have latest oneplus one drivers. Have you tried using oneplus one toolkit to install recovery?
Sent from my Oneplus One using XDA Free mobile app.

I've tried to install a recovery, but my device is locked. If i do a "fastboot oem unlock" is just crashes on me when it going into recovery. I also get the same crash when I do a factory data reset or if I reboot into recovery. I think it's definitely something to do with the recovery, but since my device is locked i'm not sure what to do?... cheers again

nickizm said:
I've tried to install a recovery, but my device is locked. If i do a "fastboot oem unlock" is just crashes on me when it going into recovery. I also get the same crash when I do a factory data reset or if I reboot into recovery. I think it's definitely something to do with the recovery, but since my device is locked i'm not sure what to do?... cheers again
Click to expand...
Click to collapse
Did you try with the latest android sdk?
Powered by Bacon

I'm sure I did.. It wasn't that old.. I can try again, but the problem is I won't be able to unlock my phone??
is this the right link? http://developer.android.com/sdk/installing/index.html?pkg=studio

New drivers, exactly the same

Have you tried using a toolkit to do the unlock for you? People usually advise against using toolkits to do it for you as it prevents you gaining the experience of doing it yourself, but since it's not working when doing it yourself I don't see any harm in trying a toolkit.
You can find several options at the bottom of @timmaaa's resources roll-up thread here

Rkr87 said:
Have you tried using a toolkit to do the unlock for you? People usually advise against using toolkits to do it for you as it prevents you gaining the experience of doing it yourself, but since it's not working when doing it yourself I don't see any harm in trying a toolkit.
You can find several options at the bottom of @timmaaa's resources roll-up thread here
Click to expand...
Click to collapse
Yea i have also tried the tool kit V2
My problem is that the recovery is damaged in some way and my device is locked. i can't "fastboot oem unlock" as it just crashes when it goes to reboot.. is there a way to unlock my device with another method or can the recovery be repaired some how? i'm such noob

patstar5 said:
I had trouble when I first tried to root. Twrp wouldn't install. I ran some command which loaded it up but didn't install it on the phone, I was the able to root my phone.
Make sure you have latest oneplus one drivers. Have you tried using oneplus one toolkit to install recovery?
Sent from my Oneplus One using XDA Free mobile app.
Click to expand...
Click to collapse
Ye i tried that as well.. can't unlock the device as it just crashes when it goes to reboot into recovery

I think you might be out of luck, unless someone here more knowledgeable than I can help.
If you have a recovery image (not zip) you can try running the following command (make sure the img file is in the same directory as your adb/fastboot files and rename it "recovery");
Code:
fastboot boot recovery.img
What this allows you to do is boot into the TWRP recovery without having it installed on your phone, but I think I read somewhere that this command no longer works.
EDIT: If the above command will let you boot into TWRP, you'll want to read the guide here and flash the script.

Rkr87 said:
I think you might be out of luck, unless someone here more knowledgeable than I can help.
If you have a recovery image (not zip) you can try running the following command (make sure the img file is in the same directory as your adb/fastboot files and rename it "recovery");
Code:
fastboot boot recovery.img
What this allows you to do is boot into the TWRP recovery without having it installed on your phone, but I think I read somewhere that this command no longer works.
EDIT: If the above command will let you boot into TWRP, you'll want to read the guide here and flash the script.
Click to expand...
Click to collapse
I've tried that as well, but as my device is locked it won't allow it.. I'm stuck in limbo for now unless there is a way to unlock my device or repair the recovery? thanks for trying anyways

nickizm said:
I've tried that as well, but as my device is locked it won't allow it.. I'm stuck in limbo for now unless there is a way to unlock my device or repair the recovery? thanks for trying anyways
Click to expand...
Click to collapse
One last effort, after a bit of reading I've seen a few people with your issue have resolved it by flashing ColorOS (Chinese Stock ROM) and then going back to a custom rom once everything is fixed.
You can find a guide on how to do this here

Rkr87 said:
One last effort, after a bit of reading I've seen a few people with your issue have resolved it by flashing ColorOS (Chinese Stock ROM) and then going back to a custom rom once everything is fixed.
You can find a guide on how to do this here
Click to expand...
Click to collapse
Cheers mate! I just had a quick flick through it and it looks promising? the only problem seems to be with drivers in windows 7 which i am also using.. I'll see if I can do it via linux or i'll have to install xp on my old laptop or something.. I'll save this for tomorrow tho as it's late and will let you know how I get on with it. thanks for the help

nickizm said:
Cheers mate! I just had a quick flick through it and it looks promising? the only problem seems to be with drivers in windows 7 which i am also using.. I'll see if I can do it via linux or i'll have to install xp on my old laptop or something.. I'll save this for tomorrow tho as it's late and will let you know how I get on with it. thanks for the help
Click to expand...
Click to collapse
No worries! Let me know how it goes good luck!

Rkr87 said:
No worries! Let me know how it goes good luck!
Click to expand...
Click to collapse
Definitely! cheers again

nickizm said:
I tried to root my Opo, but it started to go wrong after i flashed it. It went to reboot into TWRP, but all that happened was it crashed. the 1+ logo comes on and then the screen goes blank. This Happens all the time when I try a "fastboot oem unlock", factory reset, or a boot recovery.. the fastboot does work, but the device is also locked and i can't do a recovery due to this. I tried to do the root tutorial on youtube by C4ETech.. help please!
Click to expand...
Click to collapse
can you give a little detail about
"device is also locked and i can't do a recovery due to this"
you did fastboot oem unlock. so saved data is wiped. but you should be able to boot into android system,
if so, enable "developer options" by clicking "settings" --> "about phone" --> "Build Number" click it 7 times,
then go into settings developer options and enable USB debugging.
then, use not fastboot, but adb to boot into recovery.
adb reboot recovery
Click to expand...
Click to collapse
there you can got into recovery.

Gh05tShie1d said:
can you give a little detail about
"device is also locked and i can't do a recovery due to this"
you did fastboot oem unlock. so saved data is wiped. but you should be able to boot into android system,
if so, enable "developer options" by clicking "settings" --> "about phone" --> "Build Number" click it 7 times,
then go into settings developer options and enable USB debugging.
then, use not fastboot, but adb to boot into recovery.
there you can got into recovery.
Click to expand...
Click to collapse
That doesn't work as my device crashes when it goes into recovery..
eg: "fastboot oem unlock", factory reset, or a boot recovery all crash as my recovery isn't working. When my device goes to reboot in recovery the 1+ logo comes up, fades out to like a blueish from the white 1+ logo and crashes.. so basically it's looked and I can't get into recovery.. thanks for trying

fastboot cannot recognize device but adb can

usb debugging is enabled on device. running latest version of adb, fastboot. Have tried on both mac and win10 but same issue on both.
Oneplus 7 pro is running 10.3.0GM21AA
>fastboot devices
>adb devices
List of devices attached
966c8016 device
Trying to use fastboot to flash patched magisk img and install magisk.

Do you enter in fastboot in phone?
Sent from my GM1910 using Tapatalk

Yes tried from bootloader as well

fustyler said:
Yes tried from bootloader as well
Click to expand...
Click to collapse
bootloader-fastboot mode is the only time fastboot commands will work. I know you tried this "also". But I feel you are wasting your time trying to run fastboot when phone is booted (instead of focusing on the situation where fastboot should actually be working). adb and fastboot will not work at the same time by definition. Also, debugging does not need to be enabled for fastboot (only for adb).

redpoint73 said:
bootloader-fastboot mode is the only time fastboot commands will work. I know you tried this "also". But I feel you are wasting your time trying to run fastboot when phone is booted (instead of focusing on the situation where fastboot should actually be working). adb and fastboot will not work at the same time by definition. Also, debugging does not need to be enabled for fastboot (only for adb).
Click to expand...
Click to collapse
I have tried it from bootloader and still the same on my pc it just says waiting for device.
What else can I try?

fustyler said:
I have tried it from bootloader and still the same on my pc it just says waiting for device.
What else can I try?
Click to expand...
Click to collapse
Try a different cable, different USB port. Fastboot can be finicky sometimes. You can also go to Windows Device Manager, find the device, and see if you can manually select the drivers. There is a generic Android device driver that sometimes gets fastboot to work properly on some of my past devices. This is on Windows 7, haven't done this on WIn 10 yet, so not sure if it is exactly the same.

redpoint73 said:
Try a different cable, different USB port. Fastboot can be finicky sometimes. You can also go to Windows Device Manager, find the device, and see if you can manually select the drivers. There is a generic Android device driver that sometimes gets fastboot to work properly on some of my past devices. This is on Windows 7, haven't done this on WIn 10 yet, so not sure if it is exactly the same.
Click to expand...
Click to collapse
Have tried different cables and different machines both pc and mac

What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me

Since adb is working, do an adb reboot bootloader and it'll then boot into fastboot. If you can't get a return on fastboot devices at this point, it could be you haven't oem unlocked your phone yet.

mnemesis said:
Since adb is working, do an adb reboot bootloader and it'll then boot into fastboot. If you can't get a return on fastboot devices at this point, it could be you haven't oem unlocked your phone yet.
Click to expand...
Click to collapse
I ran adb reboot bootloader from pc to boot phone into fastboot.
In the bootloader it states device state is unlocked
However fastboot devices ran from pc still shows no device.

billyt1 said:
What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me
Click to expand...
Click to collapse
Thanks this fixed it.

Issue fixed by billyt1's comment above. case closed.

billyt1 said:
What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me
Click to expand...
Click to collapse
This worked for me as well. Just to make it clear, rephrasing his reply. After disabling signature verification on windows 10, connect your phone in fastboot mode & open Device Manager on Windows & look for Other > Android device.If it is found, This means Windows 10 is not having proper drivers to recognize fastboot device. Now install "OnePlus_USB_Drivers_Setup.exe" & it will show pop up for installing driver & after accepting(this is blocked due to signature verification in normal situation), Android device will be recognized in fastboot mode.

Giri Prasad said:
This worked for me as well. Just to make it clear, rephrasing his reply. After disabling signature verification on windows 10, connect your phone in fastboot mode & open Device Manager on Windows & look for Other > Android device.If it is found, This means Windows 10 is not having proper drivers to recognize fastboot device. Now install "OnePlus_USB_Drivers_Setup.exe" & it will show pop up for installing driver & after accepting(this is blocked due to signature verification in normal situation), Android device will be recognized in fastboot mode.
Click to expand...
Click to collapse
ugh. I've tried all of these suggestions and still can't get the device listed in adb while in fastboot.
I even used the TOOL ALL IN ONE without success. Funny thing is, that program recognizes my phone being in fastboot and has it listed. But if I try to flash a recovery from there, it opens a command window and ultimately says there was an error in connecting to the device.
Any help is appreciated.

I have a similar problem. I tried to disable the signature. Installed a new Redmi Note 7 driver. The phone is recognized as an Android phone in the device manager. In Orangefox recovery it is recognized with ADB command. In fastboot it is not recognized. In Orangefox I can't format data. So my ROM is not booting up. So I want to flash fastboot ROM with Fastboot but in Fastboot device is not even recognized.
t

puyow18 said:
ugh. I've tried all of these suggestions and still can't get the device listed in adb while in fastboot.
I even used the TOOL ALL IN ONE without success. Funny thing is, that program recognizes my phone being in fastboot and has it listed. But if I try to flash a recovery from there, it opens a command window and ultimately says there was an error in connecting to the device.
Any help is appreciated.
Click to expand...
Click to collapse
Sorry on the late reply. Pretty sure you can only do fastboot boot boot(recovery).img or\and boot_a or boot_b. Wont let you fastboot flash boot.img.

billyt1 said:
What's you gotta do is look up how to disable signature verification in Windows 10. Then once you done that stuff put your device in fastboot mode then on the window 10 PC open of device drivers find Android phone then bootloader update driver. There will be 2 choices for updating pick the on device one. Should do you right.
I had to do this after flashing the T-Mobile version to my international version with the msmtool and it locked my bootloader for me
Click to expand...
Click to collapse
Thank you so much!

I also had same issue. my redmi note 6 pro and asus zenfone max pro m1 can be detected in adb but not in fastboot. tried everything. changing driver/disble signature verification. also tried virtual box ubuntu/window 7. but not succeeded. It is actually an issue with usb 3. so I bought usb 2 hub. now everything works fine.

Thank you Thank you Thank you Thank you Thank you Thank you...I have been fooling with this all day

Hi, I already solved this issue (but this only works for xiaomi phone (Redmi Note 7 to be specified), for other brands I think need to download your devices flasher/driver tool)
For Xiaomi user only
1. Download Mi Unlock Tool (https://mi-globe.com/download-xiaomi-mi-unlock-tool-all-versions/) (Version 4.5.813.51)
2. Extract the files anywhere you like
3. Run MiUsbDriver.exe to install the driver
4. Try fastboot devices command
I hope this helps you guys. The Mi Unlock Tool also useful to unlock device locked bootloader.
For other devices maybe can follow this tutorial
Fixed: Fastboot not detecting your Android device
Fix the Fastboot not detecting your device. If your device is not detected by the Fastboot then these tricks will really help you.
www.qasimtricks.com

Question Fastboot drivers not working

searching all over the internet on how get my computer to recognize my device in fastboot..
I already had universal adb drivers installed, along with android studio.. so adb worked out of the box. I tried to root, got to where I need to unlock the bootloader but no fastboot..
Tried reinstalling universal adb drivers, also tried a few other downloads from google with no luck on anything..
Searching the forums it seems like fastboot 'just works' for everyone else, so maybe something on my computer is messed up..idk
device manager just shows 'unknown android device'
my phone is oneplus 9 unlocked version, model LE2115
any help is appreciated

cass89 said:
searching all over the internet on how get my computer to recognize my device in fastboot..
I already had universal adb drivers installed, along with android studio.. so adb worked out of the box. I tried to root, got to where I need to unlock the bootloader but no fastboot..
Tried reinstalling universal adb drivers, also tried a few other downloads from google with no luck on anything..
Searching the forums it seems like fastboot 'just works' for everyone else, so maybe something on my computer is messed up..idk
device manager just shows 'unknown android device'
my phone is oneplus 9 unlocked version, model LE2115
any help is appreciated
Click to expand...
Click to collapse
I had the same issue with my op9 unlocking bl.
ADB and Fastboot 29.0.2.zip | by evildog1 for Utilities
Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.
androidfilehost.com
Use these and open your command window from this . Makes a shortcut on your desktop. I did and unlocking bl worked perfectly.

cass89 said:
searching all over the internet on how get my computer to recognize my device in fastboot..
I already had universal adb drivers installed, along with android studio.. so adb worked out of the box. I tried to root, got to where I need to unlock the bootloader but no fastboot..
Tried reinstalling universal adb drivers, also tried a few other downloads from google with no luck on anything..
Searching the forums it seems like fastboot 'just works' for everyone else, so maybe something on my computer is messed up..idk
device manager just shows 'unknown android device'
my phone is oneplus 9 unlocked version, model LE2115
any help is appreciated
Click to expand...
Click to collapse
Double post

ok now I'm confused.. those drivers didn't work. following the root guide on here it says 'unlock the usual way''boot to bootloader''issue command 'fastboot flashing unlock''
so I decided to try rebooting to fastboot instead, which brought me to fastbootd
fastboot does recognize fastbootd, but the unlock command "flashing unlock" is unrecognized
So do I use bootloader or fastbootd to issue the unlock command?
if the latter, why would fastbootd not recognize the command?
the 'oem unlock' option is ticked on...

cass89 said:
ok now I'm confused.. those drivers didn't work. following the root guide on here it says 'unlock the usual way''boot to bootloader''issue command 'fastboot flashing unlock''
so I decided to try rebooting to fastboot instead, which brought me to fastbootd
fastboot does recognize fastbootd, but the unlock command "flashing unlock" is unrecognized
So do I use bootloader or fastbootd to issue the unlock command?
if the latter, why would fastbootd not recognize the command?
the 'oem unlock' option is ticked on...
Click to expand...
Click to collapse
Make sure you enable oem unlocking in dev options first and reboot.Reboot to bootloader,issue command $fastboot flashing unlock..

cass89 said:
ok now I'm confused.. those drivers didn't work. following the root guide on here it says 'unlock the usual way''boot to bootloader''issue command 'fastboot flashing unlock''
so I decided to try rebooting to fastboot instead, which brought me to fastbootd
fastboot does recognize fastbootd, but the unlock command "flashing unlock" is unrecognized
So do I use bootloader or fastbootd to issue the unlock command?
if the latter, why would fastbootd not recognize the command?
the 'oem unlock' option is ticked on...
Click to expand...
Click to collapse
Are you a carrier variant or global unlocked 9/9pro?

OEM unlocking is enabled, reboot to bootloader, command 'fastboot devices' shows no devices
Still have unknown android device in device manager
It's a global unlocked 9

cass89 said:
OEM unlocking is enabled, reboot to bootloader, command 'fastboot devices' shows no devices
Still have unknown android device in device manager
It's a global unlocked 9
Click to expand...
Click to collapse
Did you create a shortcut to those adb driver's when you installed; on desktop. And open cmd window in that spot. ?

mattie_49 said:
Did you create a shortcut to those adb driver's when you installed; on desktop. And open cmd window in that spot. ?
Click to expand...
Click to collapse
I'm not sure what you mean by shortcut
I unzipped the file to my desktop, then tried installing driver through device manager, but no driver was found.. I then tried installing the driver with the "DPInst_x64.exe" file, but it says install failed with no other explanation
I tried just opening a command prompt in that folder, but with no driver installed, it still isn't recognized
Thanks for helping, I'm lost at this point lol

cass89 said:
I'm not sure what you mean by shortcut
I unzipped the file to my desktop, then tried installing driver through device manager, but no driver was found.. I then tried installing the driver with the "DPInst_x64.exe" file, but it says install failed with no other explanation
I tried just opening a command prompt in that folder, but with no driver installed, it still isn't recognized
Thanks for helping, I'm lost at this point lol
minimal_adb_fastboot_v1.4.3_setup.exe | by shimp208 for Utilities
Download GApps, Roms, Kernels, Themes, Firmware, and more. Free file hosting for all Android developers.
androidfilehost.com
Click to expand...
Click to collapse
Try one more thing. Install these and creat shortcut on desktop and try opening cmd in this. We gonna get you unlocked.

One last thing. You have also went into developer options and tic'ed "USB debugging on then ok on device when it asks if you wanna allow phone to communicate.

tried that, still nothing. usb debugging is on.
all I need is a working driver, everything else should be good..
one thing which i'm not sure if it's an issue, I'm using an old usb c to usb 2 cable, I'm not using the cable that came with the phone because my computer doesn't have usb c ports.. but adb and mass storage/file transfers work with no issue

Hate to say it, but it still COULD be your old USB cord even with file transfer and adb functionality preserved. I had a cord that did do file transfer but not adb. You should try another cord...
Here's another driver source to download:
Universal ADB Drivers

2 new cords, and also tried multiple driver downloads, but still nothing... i was really hoping to root this phone and it seemed so easy for everyone else, thats why i bought it.. but I guess I'm stuck with a locked bootloader...
I could try factory resetting windows or the phone, but would that even make a difference?
..rereading the root guide, at the beginning it says "if you're on global and want root, flash the eu boot.img" but I'm not sure if he means do that first or use that for the guide.. I'm assuming I need the bootloader unlocked in order to flash it first, but maybe not..
..also should I have just commented in the root guide post, instead of making a new post?..

I'm sure you've tried another usb port on your computer.
Last thing to try: another PC.
Shouldn't come to that, but that's where you look to be.

Got it!! Someone posted about the op6 not working either and the fix is turning off windows driver signature, not sure why but that worked for me..
Thanks, now on to root lol

I just had some serious fastboot driver issues when setting up my oneplus. Not sure if this helps but can you at least find the driver folder that was installed on your c:drive when you initially installed the drivers. Then check your device manager when your phone is in fastboot and update the device (usually under portable devices) through that path?
If you get a tampering /corrupt error when you do this you can disable driver signing in windows which is what worked for me thanks to this saint.
[Guide] Fix Device Not Showing Up In Fastboot Mode (Windows 10/11)
You sir are saint...I've been trying to get fastboot to recognize my OP6T for the last 8 hours. Thank you so much!
forum.xda-developers.com
Edit: you solved it while I was responding....I had the same issue..congrats...I know the feeling!