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Fastboot USB not detected

When I try to flash the boot.img by running the phone in Fastboot USB it does not connect with my PC. I have installed the latest version of SDK and the necessary files that need to be installed such as fasboot.exe, etc.
I had successfully flashed a boot.img before reformatting my PC but now the phone disconnects when in Fastboot USB mode although it can connect and is shown in Device Manager when inside the phone OS.

reeper250 said:
When I try to flash the boot.img by running the phone in Fastboot USB it does not connect with my PC. I have installed the latest version of SDK and the necessary files that need to be installed such as fasboot.exe, etc.
I had successfully flashed a boot.img before reformatting my PC but now the phone disconnects when in Fastboot USB mode although it can connect and is shown in Device Manager when inside the phone OS.
Click to expand...
Click to collapse
install htc sync for htc drivers... Check my sign... U can find ADB and fastboot drivers with list of commands...

shiromau said:
install htc sync for htc drivers... Check my sign... U can find ADB and fastboot drivers with list of commands...
Click to expand...
Click to collapse
I have already done all of that but the phone still disconnects when on Fastboot USB mode

reeper250 said:
I have already done all of that but the phone still disconnects when on Fastboot USB mode
Click to expand...
Click to collapse
Well anyways it could be multiple things. It could be
1. You dont have proper drivers (but u said above you do with latest SDK and HTC Sync installed)
2. Broken USB port on computer
3. Broken mini HDMI port on your phone
4. Broken Cable.
You wouldnt by any chance be using PACman are you? I actually had some problems where my computer would not detect PACman in fastboot. If thats the case reflash PACman and try again. If that still doesnt work, then flash another ROM with full wipe, then see if it connects.

072665995 said:
Well anyways it could be multiple things. It could be
1. You dont have proper drivers (but u said above you do with latest SDK and HTC Sync installed)
2. Broken USB port on computer
3. Broken mini HDMI port on your phone
4. Broken Cable.
You wouldnt by any chance be using PACman are you? I actually had some problems where my computer would not detect PACman in fastboot. If thats the case reflash PACman and try again. If that still doesnt work, then flash another ROM with full wipe, then see if it connects.
Click to expand...
Click to collapse
I was running PACman but after I installed the latest update for it my phone kept bootlooping so I am currently running CyanVivo X. It connects fine using the USB cable but it just doesn't connect when going into Fastboot USB.

I can also connect through the recovery menu with Clockwork Recovery.

You have to make sure whether your USB port is broken or the cable itself.
Enviado do meu Incredible S

thiagofbrito said:
You have to make sure whether your USB port is broken or the cable itself.
Enviado do meu Incredible S
Click to expand...
Click to collapse
It is not the USB port or the cable because it works 100% fine when not in Fastboot USB. The phone connects perfectly fine within the ROM and in Clockwork Recovery but not in Fastboot USB. I am thinking that re-unlocking the phone may help.
EDIT: I was using a USB 3.0 port and that was the issue... For some reason it didn't like the USB 3.0 in Fastboot USB << Heads up for anyone else having this issue.

reeper250 said:
It is not the USB port or the cable because it works 100% fine when not in Fastboot USB. The phone connects perfectly fine within the ROM and in Clockwork Recovery but not in Fastboot USB. I am thinking that re-unlocking the phone may help.
EDIT: I was using a USB 3.0 port and that was the issue... For some reason it didn't like the USB 3.0 in Fastboot USB << Heads up for anyone else having this issue.
Click to expand...
Click to collapse
Is there any fix for this? My ultrabook only has USB 3.0 ports...

Yeah i've been having this same issue exactly for 3 days already but clueless. Shall there be anyone who had figured it out, plz kindly share the solution ok.
Thanks in advance
reeper250 said:
It is not the USB port or the cable because it works 100% fine when not in Fastboot USB. The phone connects perfectly fine within the ROM and in Clockwork Recovery but not in Fastboot USB. I am thinking that re-unlocking the phone may help.
EDIT: I was using a USB 3.0 port and that was the issue... For some reason it didn't like the USB 3.0 in Fastboot USB << Heads up for anyone else having this issue.
Click to expand...
Click to collapse

blackbird2394 said:
Is there any fix for this? My ultrabook only has USB 3.0 ports...
Click to expand...
Click to collapse
Denim Guy said:
Yeah i've been having this same issue exactly for 3 days already but clueless. Shall there be anyone who had figured it out, plz kindly share the solution ok.
Thanks in advance
Click to expand...
Click to collapse
No fix unless you want to replace your USB 3 ports with USB 2 ports.

[Q] Nexus 6 not recognized by pc after been fully wiped out

Hi guys
Really need urgent help on this one
I wanted to update my nexus 6 to latest5.0.1.
Usually i flash factory images but this time i tried to sideload. This is what i did.
I wanted to factory reset my phone and wipe everything and then side load. so i used TWRP and wiped by mistake the android OS. Now im left with nothing but twrp which also deleted my recovery file.
Now i can access my bootloader and twrp.
My main problem is that when i plug my phone to my pc it does not recognize it and i tried every possible way suggested by NRT tool to update my driver and no luck?
When i plug it to the pc it charges and i get baloon message that pc did not recognized the device.
Im using original cable.
Any help is really appreciated
Thanks

if your pc can recognize your device in fastboot mode then you can go this thread
http://forum.xda-developers.com/nexus-6/general/guide-flash-factory-images-nexus-6shamu-t2954008

fethi2 said:
if your pc can recognize your device in fastboot mode then you can go this thread
http://forum.xda-developers.com/nexus-6/general/guide-flash-factory-images-nexus-6shamu-t2954008
Click to expand...
Click to collapse
As i said earlier my pc wont recognize my device.
Some said that my motherboard could be damaged is it true?

try the universal adb driver http://adbdriver.com/

you can try this one too.
Najeeb Al Busaidi said:
As i said earlier my pc wont recognize my device.
Some said that my motherboard could be damaged is it true?
Click to expand...
Click to collapse
simms22 said:
try the universal adb driver http://adbdriver.com/
Click to expand...
Click to collapse

Najeeb Al Busaidi said:
As i said earlier my pc wont recognize my device.
Some said that my motherboard could be damaged is it true?
Click to expand...
Click to collapse
If mother board was damaged, you were not able to enter in bootloader Try installing universal driver as other suggested above or install motorola's driver

Najeeb Al Busaidi said:
As i said earlier my pc wont recognize my device.
Some said that my motherboard could be damaged is it true?
Click to expand...
Click to collapse
Enable usb debugging in developer options on the phone, then choose either the drivers posted above or the Google usb drivers from the sdk. Choose to install the drivers manualy in device manager when connected to the pc.

gee2012 said:
Enable usb debugging in developer options on the phone, then choose either the drivers posted above or the Google usb drivers from the sdk. Choose to install the drivers manualy in device manager when connected to the pc.
Click to expand...
Click to collapse
Debugging is both impossible and useless.
Can't set USB debugging if android is not installed. USB debugging only works in android anyway. It has no affect on bootloader or recovery

rootSU said:
Debugging is both impossible and useless.
Can't set USB debugging if android is not installed. USB debugging only works in android anyway. It has no affect on bootloader or recovery
Click to expand...
Click to collapse
Oke thanks, never to old to learn

gee2012 said:
Oke thanks, never to old to learn
Click to expand...
Click to collapse

99.99999999 .... % of the issue is USB Drivers on the PC in question.
I'd uninstall, then reinstall, or try the universal ones.
Try on another PC if available, once seen you can get it back.

fethi2 said:
if your pc can recognize your device in fastboot mode then you can go this thread
http://forum.xda-developers.com/nexus-6/general/guide-flash-factory-images-nexus-6shamu-t2954008
Click to expand...
Click to collapse
My pc cant recognize the phone while in fastboot

Hi guys
Check the attachment
And let me know if u found the problem.

Fastboot won't recognize USB.

So I'm getting into fastboot mode but it just says FASTBOOT not FASTBOOT USB even thought it's plugged in. When USB is plugged in I can't even get into fastboot mode. Any ideas?

Ephemera said:
So I'm getting into fastboot mode but it just says FASTBOOT not FASTBOOT USB even thought it's plugged in. When USB is plugged in I can't even get into fastboot mode. Any ideas?
Click to expand...
Click to collapse
Follow here

yatindroid said:
Follow here
Click to expand...
Click to collapse
Tried following it but had no luck. Plus I'm on HBOOT 1.57, S-OFF, Bootloader unlocked, and using Window 8.1. I tried Ubuntu and followed the steps, but the phone still doesn't read FASTBOOT USB.

Ephemera said:
Tried following it but had no luck. Plus I'm on HBOOT 1.57, S-OFF, Bootloader unlocked, and using Window 8.1. I tried Ubuntu and followed the steps, but the phone still doesn't read FASTBOOT USB.
Click to expand...
Click to collapse
Is your usb cable a data cable or only a charging cable? Make sure its data capable, not only charging cable, try another cable, try another port (usb 2.0).
What is your version of htc drivers?

alray said:
Is your usb cable a data cable or only a charging cable? Make sure its data capable, not only charging cable, try another cable, try another port (usb 2.0).
What is your version of htc drivers?
Click to expand...
Click to collapse
Latest HTC drivers, tried 4 cables, multiple USB ports along with other computers. It is not a driver issue because the phone doesn't say FASTBOOT-USB nor is it shown in device manager.

Ephemera said:
Latest HTC drivers, tried 4 cables, multiple USB ports along with other computers. It is not a driver issue because the phone doesn't say FASTBOOT-USB nor is it shown in device manager.
Click to expand...
Click to collapse
SO it might be a defective usb port on your phone. Does usb-otg works?

alray said:
SO it might be a defective usb port on your phone. Does usb-otg works?
Click to expand...
Click to collapse
I can't get into to recovery, it boot loops. So how would I be able to test it? Plus I don't think I have an OTG cable.

Ephemera said:
I can't get into to recovery, it boot loops. So how would I be able to test it? Plus I don't think I have an OTG cable.
Click to expand...
Click to collapse
I guess that if your phone isn't detected both in windows and ubuntu its maybe a bad usb port on the phone or maybe a corrupted bootloader.
What caused the bootloop?

alray said:
I guess that if your phone isn't detected both in windows and ubuntu its maybe a bad usb port on the phone or maybe a corrupted bootloader.
What caused the bootloop?
Click to expand...
Click to collapse
CM12 was installed then about 2 months later the screen was replaced (Phone was apparently completely drained), is there a way to fix a corrupted bootloader?
Have stumbled upon this https://www.ifixit.com/Answers/View/167884/iPhone+5s+-+Infinite+boot+loop+(after+screen+replacement
Hmmm this guy seems to have the same issue. I'm guessing a screw in the wrong spot causes some kind of short? Even though each screw had a different size and thread.
What do you think?

[Solved]M7 Soft bricked,ADB/Fastboot not working,No OS as well,TWRP 2.6.3.3

Hello.I am in some kind of a trouble..I just bought a phone with firmware problems,hoping i could make it work.The problem is this,someone tried to update the firmware,unsuccesfully,and now it's stuck with no OS.I can only start recovery and bootloader.
Recovery is Teamwin 2.6.3.3.Already tried to clear cache and everything,to use an USB with OTG,but it's not recognised,ADB sideload also it's not working.
adb devices shows the phone is not connected,and FastBoot says "Waiting for device".Any idea? I've tried,read a lot,but I can't really work it out..
Also,I can't find the device in Device Manager,neither in ADB nor Fastboot.
I tried using Windows 8.1 and 7..Same deal.
Thank you!

chris_b0ss said:
Hello.I am in some kind of a trouble..I just bought a phone with firmware problems,hoping i could make it work.The problem is this,someone tried to update the firmware,unsuccesfully,and now it's stuck with no OS.I can only start recovery and bootloader.
Recovery is Teamwin 2.6.3.3.Already tried to clear cache and everything,to use an USB with OTG,but it's not recognised,ADB sideload also it's not working.
adb devices shows the phone is not connected,and FastBoot says "Waiting for device".Any idea? I've tried,read a lot,but I can't really work it out..
I tried using Windows 8.1 and 7..Same deal.
Thank you!
Click to expand...
Click to collapse
Is it a M8 or a M7, because your title says M8 but you have posted in the M7 forum.

Sorry,I am quite scared.It's M7.

chris_b0ss said:
Sorry,I am quite scared.It's M7.
Click to expand...
Click to collapse
First, follow instructions given in this post to install the latest android sdk-tools and the latest htc drivers. Also make sure you don't have HTC Sync installed on your computer.
Then connect your phone to you computer with the original cable (or any other cable already known to work for data transfer - some usb cable are only providing power), reboot the phone in bootloader mode by holding vol down and power. Make sure you see the red "fastboot usb" caption on the screen, if not use vol up/down and power to select the "fastboot" menu. Once there open a command window form the android sdk-tools folder and type "fastboot getvar all". Copy/paste the ouput of this command here (except the imei and serialno).

I've followed that,and still not working.pics attached.
It's very weird,because I was expecting for a soundfrom the Windows,like a new device connected .But ..nothing
Sent from my GT-I9100 using XDA Free mobile app

chris_b0ss said:
I've followed that,and still not working.pics attached.
It's very weird,because I was expecting for a soundfrom the Windows,like a new device connected .But ..nothing
Sent from my GT-I9100 using XDA Free mobile app
Click to expand...
Click to collapse
With your phone in bootloader/fastboot mode, go to your windows device manager, take a screenshot of your device manager and post it here please.

The unknown device is related to my laptop.Nothing happens when I connect the phone.

chris_b0ss said:
The unknown device is related to my laptop.Nothing happens when I connect the phone.
Click to expand...
Click to collapse
Ok so its not detected at all
Might be caused by
a bad usb cable --> Try another one that you are 100% sure its working
a bad usb port on the computer (use only usb 2.0 ports btw)
a problem with the computer ---> Try another computer.
a bad usb port on the phone ---> need to replace the usb/front mic board
Might also worth to fix your laptop drivers problem. Might be causing problem if the "unknown" device is an adapter or usb controller...
Then reboot the computer.

I think we can exclude the first two,because I've tried 2 different USB cables,and with my S2 ,both of them are working,even ADB.I will try to replace the usb port from the phone,and then try again.But,do you think it will work ?
Thank you!

chris_b0ss said:
I think we can exclude the first two,because I've tried 2 different USB cables,and with my S2 ,both of them are working,even ADB.I will try to replace the usb port from the phone,and then try again.But,do you think it will work ?
Thank you!
Click to expand...
Click to collapse
Its hard to tell, there isn't any background info about what was done on that phone. The usb board is pretty cheap so it worth a try if you are 100% sure everything else is fine (computer, cables etc..)

I understand,but,I mean,as far as I know,it's not hard brick,because the phone is still booting..in some way ..so if I manage to connect it,I can flash the rom..am I right?
Sent from my GT-I9100 using XDA Free mobile app

chris_b0ss said:
I understand,but,I mean,as far as I know,it's not hard brick,because the phone is still booting..in some way ..so if I manage to connect it,I can flash the rom..am I right?
Sent from my GT-I9100 using XDA Free mobile app
Click to expand...
Click to collapse
Normally it should be pretty easy to fix if you can get fastboot and adb connectivity. You could then update the firmware so you can flash the correct RUU to restore the phone back to stock, already made the research and all the files (firmware and ruu) you'll need are available.

alray said:
Normally it should be pretty easy to fix if you can get fastboot and adb connectivity. You could then update the firmware so you can flash the correct RUU to restore the phone back to stock, already made the research and all the files (firmware and ruu) you'll need are available.
Click to expand...
Click to collapse
Sorry for the late reply,the phone is now in service,in 1-2 days they should fix the USB board,and I will get back with more info soon.
Thank you very much for your quick answers and for taking time to help me!

Good news,I've managed to unbrick it.I asked a friend with a Mac to check it out,and his Mac recognized with no problems.Installed the Os,but still,Windows can't detect it.I've tried on 2 pc's(7 and 10) with the proper drivers.Weird..
Anyway,thank you for your time @alray !

Nexus 6 wont detect MTP USB but charges fine

Anyone with the same issue ? I am stuck at the bootloader since I wiped out my system image I can get to the recovery but I don't have a way to transfer new ROM since phone wont detect USB (MTP).
I didn't have any image backed to restore to. Tried OTG cable/USB nothing worked
What are my options ?

rocco24 said:
Anyone with the same issue ? I am stuck at the bootloader since I wiped out my system image I can get to the recovery but I don't have a way to transfer new ROM since phone wont detect USB (MTP).
I didn't have any image backed to restore to. Tried OTG cable/USB nothing worked
What are my options ?
Click to expand...
Click to collapse
Hi... Is data mounted and MTP enabled in TWRP?
Is your phone detected while in bootloader?
Try: fastboot devices
If phone is recognized, download stock firmware of your choice and flash it...

5.1 said:
Hi... Is data mounted and MTP enabled in TWRP?
Is your phone detected while in bootloader?
Try: fastboot devices
If phone is recognized, download stock firmware of your choice and flash it...
Click to expand...
Click to collapse
MTP is enabled but phone is not detected at all
I can access the terminal in recovery mode but it doesn't support ftp command to download any firmware.
I guess I am doomed

rocco24 said:
MTP is enabled but phone is not detected at all
I can access the terminal in recovery mode but it doesn't support ftp command to download any firmware.
I guess I am doomed
Click to expand...
Click to collapse
Wait... I don't get it...
Are you stuck in recovery? Or bootloader?
Also you can't use ftp commands either in bootloader or recovery... I suggest you start by reading this thread to learn a few basics about Android commands and how-to :
https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928

5.1 said:
Wait... I don't get it...
Are you stuck in recovery? Or bootloader?
Also you can't use ftp commands either in bootloader or recovery... I suggest you start by reading this thread to learn a few basics about Android commands and how-to :
https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Click to expand...
Click to collapse
Sorry to confuse you I can get to the bootloader and the recovery no problem but when I try to reboot to the system it kept saying no OS installed. I don't have any ROM installed and I can't use USB cable since phone won't detect it. So I am stuck at back-end.

rocco24 said:
Sorry to confuse you I can get to the bootloader and the recovery no problem but when I try to reboot to the system it kept saying no OS installed. I don't have any ROM installed and I can't use USB cable since phone won't detect it. So I am stuck at back-end.
Click to expand...
Click to collapse
So...
What operating system is installed on your computer?
Did you already install adb/fastboot drivers?
In device manager, while being in bootloader, is your phone detected when you plug your USB cable?
Did you try different cables, USB ports?

5.1 said:
So...
What operating system is installed on your computer?
Did you already install adb/fastboot drivers?
In device manager, while being in bootloader, is your phone detected when you plug your USB cable?
Did you try different cables, USB ports?
Click to expand...
Click to collapse
I tried different cables/PCs nothing worked. I think my phone USB port is defected but what confuses me more is that it can be charged just fine but no USB connectivity
It is still under warranty but not sure if it will be honored since I have the bootloader unlocked.

rocco24 said:
Sorry to confuse you I can get to the bootloader and the recovery no problem but when I try to reboot to the system it kept saying no OS installed. I don't have any ROM installed and I can't use USB cable since phone won't detect it. So I am stuck at back-end.
Click to expand...
Click to collapse
Nothing happens in device manager when.you plug your phone? Even not recognized as an unknown device?

5.1 said:
Nothing happens in device manager when.you plug your phone? Even not recognized as an unknown device?
Click to expand...
Click to collapse
Nothing like said it is dead. I have another nexus 6 can connect easily to the PC I am pretty sure it is a phone issue.

Well, if you're 100℅ sure the USB port is damaged, there's nothing else than a repair that could bring your phone back to life... Good luck..!

5.1 said:
Well, if you're 100℅ sure the USB port is damaged, there's nothing else than a repair that could bring your phone back to life... Good luck..!
Click to expand...
Click to collapse
thanks for your time and help.

So the nexus 6 gets old now, may just check to clean your port

coremania said:
So the nexus 6 gets old now, may just check to clean your port
Click to expand...
Click to collapse
Tried that already it didn't work

Might be a driver problem.
Connect it your windows pc and check the Device Manager if it is detected as "Android" device. If so uninstall it and disconnect and reconnect it to the pc. Let windows install the MTP drivers.

aliinbox said:
Might be a driver problem.
Connect it your windows pc and check the Device Manager if it is detected as "Android" device. If so uninstall it and disconnect and reconnect it to the pc. Let windows install the MTP drivers.
Click to expand...
Click to collapse
This has already been discussed if you read the "few" previous posts ... Device isn't detected at all...