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Can't Mount nexus s. Usb device not Recognized

My nexus S won't show up on my computer. I've tried re installing and uninstalling the drivers for it. It shows up as an "Unknown device" and tells me that i should try to replace the device. I'm running W7 prof. and 2.3.4 stock on my nexus with root. I've tried several fixes and none have worked. Please if anyone has had the same problem help me out.

Andrew421 said:
My nexus S won't show up on my computer. I've tried re installing and uninstalling the drivers for it. It shows up as an "Unknown device" and tells me that i should try to replace the device. I'm running W7 prof. and 2.3.4 stock on my nexus with root. I've tried several fixes and none have worked. Please if anyone has had the same problem help me out.
Click to expand...
Click to collapse
Sounds like the cable. Try a new one, something thick like they have at radio shack.

Andrew421 said:
My nexus S won't show up on my computer. I've tried re installing and uninstalling the drivers for it. It shows up as an "Unknown device" and tells me that i should try to replace the device. I'm running W7 prof. and 2.3.4 stock on my nexus with root. I've tried several fixes and none have worked. Please if anyone has had the same problem help me out.
Click to expand...
Click to collapse
Been having the same problem for months. Don't think it's the cable since everything worked fine before i manually installed 2.3.4. Tried many of the same fixes as you, also with no luck.

Did you guys try to load a custom rom?
Sent from my Nexus S using Tapatalk

Which USB drivers did you use? Try the PDAnet drivers, they seem to work for everyone.
Greetz
Sent from my Nexus S using XDA Premium App

deeren said:
Did you guys try to load a custom rom?
Sent from my Nexus S using Tapatalk
Click to expand...
Click to collapse
How could we install any ROM without USB connectivity?

frutelaken said:
Which USB drivers did you use? Try the PDAnet drivers, they seem to work for everyone.
Greetz
Sent from my Nexus S using XDA Premium App
Click to expand...
Click to collapse
Have you tried it? And did it work for you?

jrocka01 said:
How could we install any ROM without USB connectivity?
Click to expand...
Click to collapse
i never connect via usb. you download the rom onto the phone, boot into recovery, flash the rom, then reboot. easy.

frutelaken said:
Which USB drivers did you use? Try the PDAnet drivers, they seem to work for everyone.
Greetz
Sent from my Nexus S using XDA Premium App
Click to expand...
Click to collapse
I've tried this and it installed but it didn't work.

Are you trying to have your Nexus S recognized as a USB storage device or a Nexus S device? Have you tried connecting to a different USB port on your computer?

Same problem - seemed to start a week ago when I updated Music app. Tried 3 different PC's and 3 different cables with no luck. Then tried turning off whilst lead still plugged in and it immediately rebooted so I unplugged, put it in recovery mode then plugged in lead and rebooted and it seemed to kick it into life... since then works ok once I'd rebooted PC's. Weird as hell and initial thought USB phone connector was broken but seems fine now. Good luck!
Sent from my Nexus S using XDA Premium App

Just got my Nexus S back from Samsung , they had to replace the usb port.. Similar symptoms...

Same here, went to gsm repair shop and change the usb port. I got my phone from online second hand phones and dont have guarantee
sorry for my english

meblacq said:
Same here, went to gsm repair shop and change the usb port. I got my phone from online second hand phones and dont have guarantee
sorry for my english
Click to expand...
Click to collapse
after this I have used nokia charger again and then fixed myself the usb with a needle

Andrew421 said:
I've tried this and it installed but it didn't work.
Click to expand...
Click to collapse
try the samsungdriver , you can find it on nexusshacks.com together with a tutorial on how to install it . worked for me.

Same problem here , just tried switching the cable from my old htc shift and it worked . The one that came with the nexus is having problems , seems to be one more issue for the books for this phone , from the reception , battery use ....

My stock cable didn't support development and my phone keeps disconnecting.
So i tried a different cable, which is from my Nokia N85. It worked fine.

1. try other computer , determinate it is cable, USB port, windows driver or phone problem
2. try delete old device displays in your computer and reinstall, try use "windows update" to find correct driver , by the way , i didn't have to install new driver after i update from 2.3.4 to 2.3.6 , so i guess that's same driver
...
and , other silly idea , try to plug it into other new USB port of your computer...
i'm not sure , but sometimes i plug some device out and plug it into other port , windows just reinstall the same driver and disiplay #2 for the same device...

URGENT, unable to connect phone to PC

I wanted to flash XXKPE so I backed up with TiB and connected phone in Mass Storage mode but the phone is not recognised. There is no sound of new device being connected. The phone charges but does not mount. Till a few days back everything was okay but suddenly this problem. Please advice.
Edit : I tried different cables and problem not resolved. Also connected Wave2 phone and it connects, so something in the phone. I feel the Legend-X theme which gives a sound message "Recharge Enabled" when I connect is somehow responsible.

I don't know if it will be useful but I would try to download Samsung Kies and reinstall drivers with it.

@jesrani
did you here a sound when you connect the phone to the computer ???
(a found new hardware sound in windows)

Pralinos said:
I don't know if it will be useful but I would try to download Samsung Kies and reinstall drivers with it.
Click to expand...
Click to collapse
Maybe I can try but not sure if this is the problem. Normally when a device is connected, Windows makes a sound indication a new connection and then loads the drivers. In this case there is no sound but the mobile charges and also the cable works for other mobile.

jesrani said:
Maybe I can try but not sure if this is the problem. Normally when a device is connected, Windows makes a sound indication a new connection and then loads the drivers. In this case there is no sound but the mobile charges and also the cable works for other mobile.
Click to expand...
Click to collapse
the charge will work because of the voltage from the USB
have you tried enabling/disabling the USB debugging Mode

I do not have any problem with it dude. This fw is stable among previous releases of gb but results are different on different devices. For instance.after flashing 8 -10 times, I could not root it the way others are rooting the phone. I had to use an agree flashing the cwm. Done ppl have kernel panic making it un usable. I donot have single kernel panic. So its not theme,.may be something else. May be others who are using the theme can opine.
Sent from my GT-I9003 using XDA Premium App

trip007in said:
I do not have any problem with it dude. This fw is stable among previous releases of gb but results are different on different devices. For instance.after flashing 8 -10 times, I could not root it the way others are rooting the phone. I had to use an agree flashing the cwm. Done ppl have kernel panic making it un usable. I donot have single kernel panic. So its not theme,.may be something else. May be others who are using the theme can opine.
Sent from my GT-I9003 using XDA Premium App
Click to expand...
Click to collapse
You are right, it was not the theme, but don't know what was the problem. Probably the cable. Resolved by itself. Now flashed KPE and in process of setting up, can't wait to install your theme on this.

[Q] Return to Stock Without Odin

I am having a problem with my USB connection, it's gotten a bit warped...probably from all my rooting and Odining! I can charge with it, but my computer will not recognize it. I have the Total Equipment Protection, so I should be able to get this fixed, but I want to return to stock before bringing it in. I would Odin the phone, but at the moment, because of the USB issues, Odin is not recognizing the phone. I looked for links to flashing Stock without Odin in this forum, but they seem to be pretty old. Is there I flashable zip file I can use in CWM that will return my phone to the current unrooted stock rom?

maltydog said:
I am having a problem with my USB connection, it's gotten a bit warped...probably from all my rooting and Odining! I can charge with it, but my computer will not recognize it. I have the Total Equipment Protection, so I should be able to get this fixed, but I want to return to stock before bringing it in. I would Odin the phone, but at the moment, because of the USB issues, Odin is not recognizing the phone. I looked for links to flashing Stock without Odin in this forum, but they seem to be pretty old. Is there I flashable zip file I can use in CWM that will return my phone to the current unrooted stock rom?
Click to expand...
Click to collapse
I don't think. So. Even if you could get full stock your boot recovery will not be stock. But I could be wrong. Which end is bad the phone side or the usb side. You can always try a different port on your computer and see if that will work. Worst comes to worse. You can brick it and get one tell them that you was having charger issues and. And you went to plug your phone into the pc and you droped it and it wouldn't turn on.
Sent from my SPH-D700 using xda premium

maltydog said:
I am having a problem with my USB connection, it's gotten a bit warped...probably from all my rooting and Odining! I can charge with it, but my computer will not recognize it. I have the Total Equipment Protection, so I should be able to get this fixed, but I want to return to stock before bringing it in. I would Odin the phone, but at the moment, because of the USB issues, Odin is not recognizing the phone. I looked for links to flashing Stock without Odin in this forum, but they seem to be pretty old. Is there I flashable zip file I can use in CWM that will return my phone to the current unrooted stock rom?
Click to expand...
Click to collapse
I have the same problem you do. I have one usb cable that will work, the rest will only charge.
Sent from shane6374's Epic via Tapatalk

The best you can do is flash the ReRFS ROM. It looks like stock but you will still have root, custom recovery and superuser. Plus you are stuck with whatever modem baseband you are on.
Sent from my SPH-D700 using XDA App

maltydog said:
I am having a problem with my USB connection, it's gotten a bit warped...probably from all my rooting and Odining! I can charge with it, but my computer will not recognize it. I have the Total Equipment Protection, so I should be able to get this fixed, but I want to return to stock before bringing it in. I would Odin the phone, but at the moment, because of the USB issues, Odin is not recognizing the phone. I looked for links to flashing Stock without Odin in this forum, but they seem to be pretty old. Is there I flashable zip file I can use in CWM that will return my phone to the current unrooted stock rom?
Click to expand...
Click to collapse
What happens when you plug in the phone without odin open? Does it ask what option, I.e., mass storage, charging...?
Sent from the most "Epic" phone in the world! ...Using XDA Premium app

kennyglass123 said:
The best you can do is flash the ReRFS ROM. It looks like stock but you will still have root, custom recovery and superuser. Plus you are stuck with whatever modem baseband you are on.
Sent from my SPH-D700 using XDA App
Click to expand...
Click to collapse
Doesn't the stock kernel remove root from ReRFS? I think I remember it doing so. Try it, there isn't much to lose. If that works you can just use the stock recovery .zip. http://forum.xda-developers.com/showthread.php?t=1027904
Another thought: When my PC wouldn't recognize my Epic, I had to reinstall the Galaxy S drivers and then it worked with Odin. You can try that too.

maltydog said:
I am having a problem with my USB connection, it's gotten a bit warped...probably from all my rooting and Odining! I can charge with it, but my computer will not recognize it. I have the Total Equipment Protection, so I should be able to get this fixed, but I want to return to stock before bringing it in. I would Odin the phone, but at the moment, because of the USB issues, Odin is not recognizing the phone. I looked for links to flashing Stock without Odin in this forum, but they seem to be pretty old. Is there I flashable zip file I can use in CWM that will return my phone to the current unrooted stock rom?
Click to expand...
Click to collapse
Your best bet is that the cable is busted. That happened to me but I fixed it byyyyy going to sprint and paying 20 bucks for a cable with two ends. One for data, one for charging. Yes, charges 2 devices at one time.

Tomcat5 said:
Doesn't the stock kernel remove root from ReRFS? I think I remember it doing so. Try it, there isn't much to lose. If that works you can just use the stock recovery .zip. http://forum.xda-developers.com/showthread.php?t=1027904
Another thought: When my PC wouldn't recognize my Epic, I had to reinstall the Galaxy S drivers and then it worked with Odin. You can try that too.
Click to expand...
Click to collapse
That looks like the right link. Thanks.

jemajun000 said:
Your best bet is that the cable is busted. That happened to me but I fixed it byyyyy going to sprint and paying 20 bucks for a cable with two ends. One for data, one for charging. Yes, charges 2 devices at one time.
Click to expand...
Click to collapse
I wish it was the cable, but I am pretty sure it is the phone. I know when it happened, the connection does not feel right, it is a little loose. But thanks.

js042507 said:
What happens when you plug in the phone without odin open? Does it ask what option, I.e., mass storage, charging...?
Sent from the most "Epic" phone in the world! ...Using XDA Premium app
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Click to collapse
It charges fine, but does not recognize the phone. There is clearly something wrong with the USB connection on the phone, I can feel it, it is a bit loose, wobbly.

maltydog said:
It charges fine, but does not recognize the phone. There is clearly something wrong with the USB connection on the phone, I can feel it, it is a bit loose, wobbly.
Click to expand...
Click to collapse
Oh ok. Well, it definitely has power! Actually, I had a friend who had a similar problem. His phone was a vibrant, but they are pretty much the same phone. All-in-all, it was trial and error to get it detected. I would get it like maybe 1 out of 40 attempts? We finally returned him to stock via odin, but he ended up getting a replacement. Surely a hardware issue. The weird is though, the computer would only find the phone if it was in download mode? Anyways, keep your phone in download mode, and have odin open. First try to take the battery out, have the cable plugged into your pc, odin is still open, and put your battery in while holding the "1" button. It should boot in download mode, and MAYBE see the phone? Try that. Also, make sure the port you're connecting to (on your pc) is directly attached to the motherboard. Mess with different ports. Let me know if there's any luck.
Sent from the most "Epic" phone in the world! ...Using XDA Premium app

js042507 said:
Oh ok. Well, it definitely has power! Actually, I had a friend who had a similar problem. His phone was a vibrant, but they are pretty much the same phone. All-in-all, it was trial and error to get it detected. I would get it like maybe 1 out of 40 attempts? We finally returned him to stock via odin, but he ended up getting a replacement. Surely a hardware issue. The weird is though, the computer would only find the phone if it was in download mode? Anyways, keep your phone in download mode, and have odin open. First try to take the battery out, have the cable plugged into your pc, odin is still open, and put your battery in while holding the "1" button. It should boot in download mode, and MAYBE see the phone? Try that. Also, make sure the port you're connecting to (on your pc) is directly attached to the motherboard. Mess with different ports. Let me know if there's any luck.
Sent from the most "Epic" phone in the world! ...Using XDA Premium app
Click to expand...
Click to collapse
Oh, it's a hardware issue. I used this cable, and this USB port on my computer, many times without issue until the other day. Even if I do get the phone to appear in Odin, I am not sure I want to flash it that way, as I am afraid I will lose the connection midway, and then where will I be? If I can run a zip file in CWM as mentioned in a post above that seems like a safer way to go, and it's easy enough to copy that to the SD card when it's out of the phone. I would like my phone to look normal before I bring it in. It will probably be a couple of more days before I do this, though. I am not ready to yet.

maltydog said:
Oh, it's a hardware issue. I used this cable, and this USB port on my computer, many times without issue until the other day. Even if I do get the phone to appear in Odin, I am not sure I want to flash it that way, as I am afraid I will lose the connection midway, and then where will I be? If I can run a zip file in CWM as mentioned in a post above that seems like a safer way to go, and it's easy enough to copy that to the SD card when it's out of the phone. I would like my phone to look normal before I bring it in. It will probably be a couple of more days before I do this, though. I am not ready to yet.
Click to expand...
Click to collapse
Yeah. You can flash a zip and return it to stock, but cwm will still be on there. The only way to return (officially) to stock would be to use odin. This would replace the custom recovery with the stock recovery. Depending on which modem you're on, you can flash a "stock" rom, and put tw launcher on it? As long as you have an updated backup, you can odin. Even if odin fails in the process, this will only soft-brick the device. And that is an easy fix. Just go into download mode and try again. Lol. My buddy with the vibrant had odin fail many times. We actually recovered from the "pc-phone" error screen. If you're getting a replacement, you must put it back to stock. Depending on which insurance/warranty service you're using, it is wise to play it safe. I highly recommend you get a replacement though. Just tell them you have a usb hardware issue.
Sent from the most "Epic" phone in the world! ...Using XDA Premium app

USB Charging works, PC won't detect tablet at all.

My tablet has been working fine for as long as I can remember. It's unlocked and was running a rooted stock rom. All good so far.
I can charge the tablet fine. Thought I would try flashing Paranoid Android. Here's where my problems started.
Plugged the tablet into my PC to backup the contents of the storage, wasn't detected at all. No flicker of anything in device manager. Have hooked it up to a linux machine and watched the output of syslog to see if it was spotted there, but nothing.
Decided to not worry about backing up and did a full wipe, apart from system, to take it back to factory.
No difference.
Downloaded Paranoid Android via the browser and flashed it from CWM. Flashed fine, but still no USB.
Now I want to take it back to stock so I can send it back under warranty, but HOW?
Any bright ideas??

Is there any sort of USB drivers in your device manager relating to your tablet.
You need to remove those drivers, restart and re-plug.
If not, I'd try to download a flash zip, and flash it from the device itself, as you won't be able to flash it from PC if it doesn't recognise it.

Wilks3y said:
Is there any sort of USB drivers in your device manager relating to your tablet.
You need to remove those drivers, restart and re-plug.
If not, I'd try to download a flash zip, and flash it from the device itself, as you won't be able to flash it from PC if it doesn't recognise it.
Click to expand...
Click to collapse
The device is completely unrecognised via USB. Drivers don't even come into it.
Suggestions for where I can get a flash zip of the stock rom? As far as I can tell, it doesn't exist.

what about "fastboot devices" in fastboot mode?
Sent from my Galaxy Nexus using xda app-developers app

Nope. Nothing. The USB port is completely useless for anything but charging now.
A friend has just flashed a stock image for me and sent me a nandroid backup of his tablet, going to try and get that onto it now.

And now I'm back with a stock rom, but custom recovery. Need to work out how to flash the stock recovery back from the recovery.img file.

All sorted. Used Flash Image GUI to flash the stock recovery.img back. Only thing I haven't been able to do is relock the bootloader, but I can't see that affecting my RMA.
They're picking it up in the next couple of days then should be no more than 10 days to get it back to me.
Link to Flash Image GUI in case it helps anyone else!
https://play.google.com/store/apps/details?id=com.joeykrim.flashimagegui&hl=en

Richy Freeway said:
All sorted. Used Flash Image GUI to flash the stock recovery.img back. Only thing I haven't been able to do is relock the bootloader, but I can't see that affecting my RMA.
They're picking it up in the next couple of days then should be no more than 10 days to get it back to me.
Link to Flash Image GUI in case it helps anyone else!
https://play.google.com/store/apps/details?id=com.joeykrim.flashimagegui&hl=en
Click to expand...
Click to collapse
An unlocked bootloader is a voided warranty. In all likelyhood, they will reject the warranty validity and make you pay for repairs.
Sent from my SAMSUNG-SGH-I727 using xda premium

This is a situation I'm prepared for. It needs fixing one way or the other. At least I've given myself the best chance of a warranty repair. If it ends up costing, so be it!

Could be your usb cable. Happened to my nexus s!
Sent from my Nexus S using xda app-developers app

Richy Freeway said:
Nope. Nothing. The USB port is completely useless for anything but charging now.
A friend has just flashed a stock image for me and sent me a nandroid backup of his tablet, going to try and get that onto it now.
Click to expand...
Click to collapse
Hi, so did you fix the problem and you PC is recognizing the tablet now ? I still have the same problem, the PC doesn't see the tablet, even as a unknown device or something else. Is the same as i do not plug it, the only difference is that is charging.
If you fixed this problem .. how did you do it ?

Hi,
Yeah I RMA'd it with Asus and they repaired it under warranty. It's still going strong now running CM.

Richy Freeway said:
Hi,
Yeah I RMA'd it with Asus and they repaired it under warranty. It's still going strong now running CM.
Click to expand...
Click to collapse
Hi, do you know what they fixed ? What was the problem ?

To be perfectly honest, I think they just swapped it out.

Richy Freeway said:
To be perfectly honest, I think they just swapped it out.
Click to expand...
Click to collapse
I'm asking you because I have the same problem as you .. I changed the micro USB module but is still not working. I'm just asking what something else it could be.

alpinia said:
I'm asking you because I have the same problem as you .. I changed the micro USB module but is still not working. I'm just asking what something else it could be.
Click to expand...
Click to collapse
If you have changed the USB port check the connection at both ends of the ribbon cable if they are both OK then the motherboard is at fault. The nexus7 has the worst protective circuitry I've ever seen on a device so its easy to inadvertently damage the motherboard.
Sent from my C5303 using xda app-developers app

Captain Sweatpants said:
If you have changed the USB port check the connection at both ends of the ribbon cable if they are both OK then the motherboard is at fault. The nexus7 has the worst protective circuitry I've ever seen on a device so its easy to inadvertently damage the motherboard.
Sent from my C5303 using xda app-developers app
Click to expand...
Click to collapse
Mine is on its way back for 3rd for this very same issue. So we'll see what they repaired this time or if they just replaced it. Hopefully the latter because my warranty is now up. Do they have a warranty period on their repairs?
1st Mainboard
2nd USB Assembly

jadesse said:
Mine is on its way back for 3rd for this very same issue. So we'll see what they repaired this time or if they just replaced it. Hopefully the latter because my warranty is now up. Do they have a warranty period on their repairs?
1st Mainboard
2nd USB Assembly
Click to expand...
Click to collapse
So they changed the Mainboard and after that the USB Assembly ?

alpinia said:
So they changed the Mainboard and after that the USB Assembly ?
Click to expand...
Click to collapse
That is correct. I received it back yesterday & the replaced the mainboard again. This time they put in a 8G board instead of a 32G so it had to go right back. I am not sure if it ever be fixed, there is something going on. I should not have had to send it in 3 times for the some issue.

Nexus 4 lost computer USB data connection ability

at some point in the last 6 months or so, my phone lost the ability to connect to my computer- I've tested by uninstalling and reinstalling the USB drivers on my computer, using virtual drivers, etc. Everything I could- I even tested on other computers that it has worked on in the past. Nothing helps.
I then decided it must be on my phones end, so I went so far as to replace the USB connection board inside my phone and that doesnt even work.
I used to have my phone rooted, but that was lost at some point over a couple OTA updates-- Is there anyway I can restore root access on my device without using a USB connection, or does anyone have any ideas on how to fix the connection issue?
Thanks!

Did you check the cable?

krystyuc said:
Did you check the cable?
Click to expand...
Click to collapse
Multiple cables as well. I'd do that before replacing the board!

crazychris78 said:
Multiple cables as well. I'd do that before replacing the board!
Click to expand...
Click to collapse
Usb debugging enabled?

krystyuc said:
Usb debugging enabled?
Click to expand...
Click to collapse
Tried that as well. I've tried pretty much everything I can think of. the superuser app says it might be a kernal issue

crazychris78 said:
Tried that as well. I've tried pretty much everything I can think of. the superuser app says it might be a kernal issue
Click to expand...
Click to collapse
Try the following
1)Boot into booloader and check in device manager if the phone is detected if so then go flash-all.bat 4.4.3( will wipe your phone,new phone factory)

krystyuc said:
Try the following
1)Boot into booloader and check in device manager if the phone is detected if so then go flash-all.bat 4.4.3( will wipe your phone,new phone factory)
Click to expand...
Click to collapse
bootloader isn't recognized on my PC or any others, either

crazychris78 said:
bootloader isn't recognized on my PC or any others, either
Click to expand...
Click to collapse
Well,in that case...i don't know.Maybe you should go to a specialist.

Look for flashify, a app can flash recovery, once you have recovery, you can have root.
Sent from my Galaxy Nexus using Tapatalk

chongns said:
Look for flashify, a app can flash recovery, once you have recovery, you can have root.
Sent from my Galaxy Nexus using Tapatalk
Click to expand...
Click to collapse
Flashify requires root access

do you have a kernel with fast charge enabled? that disables PC data connection

crazychris78 said:
Flashify requires root access
Click to expand...
Click to collapse
please answer below question
1. what os use on your PC ?
2. do you install others driver beside google adb and fastboot?
3. what version of adb and fastboot you have if you have installed before
4. you said you have OTA udpate from gogole or form the ROM developer?
note:
you need to install latest adb and fastboot. latest version is .31
if you have other 2 or more driver installed before, it may crash or mis regonice the phone, like samsung and google driver for Galaxy nexus which i facing.
some help form external web here

I have same problem, i tried even on linux. What is worst i removed rom from sdcard and now my current rom crashed. When i try to pull new rom via adb, new file is created but is "empty". Usb otg doesn't work in recovery ;/

I am seeing the same thing also. I even bought a USB replacement part on ebay and installed it. The PC still doesn't see the device.