Database Users

Yesterday my Phone became an unrecognized USB device

After months of no problems yesterday I plugged my phone in for its nightly charge and noticed that it did not trigger the usual USB mount prompt.
I assumed it was Windows, but I have a bunch of machines and operating systems so I checked and they all has the same result. I switched out cords and did a complete power reset (taking battery out) no change.. The Phone charges through the USB but the computers say "unrecognized usb device" and cannot mount the phone as a drive and the phone does not offer the option as it used to???
I don't recall getting any sort of update that might have related to this?
This is the original T-mobile version

This happens to me all the time. However a restart of my phone and computer solves the issue.

DarkAgent said:
This happens to me all the time. However a restart of my phone and computer solves the issue.
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Neither of those things worked for me. There's gotta be something else to it.

jrocka01 said:
Neither of those things worked for me. There's gotta be something else to it.
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Go over changes you made to your phone recently.

only flashing another ROM worked for me... try reflash ur ROM, and wipe stuff if it doesnt work

DarkAgent said:
Go over changes you made to your phone recently.
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This all started when I manually installed 2.3.4. Everything else works fine. I'm not the only one with this problem.

roshga said:
only flashing another ROM worked for me... try reflash ur ROM, and wipe stuff if it doesnt work
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How do you do that without USB connectivity?

It is very frustrating, maybe a hardware fail? I see just enough post relating to the issue that makes me know it is real but not sure how to resolve,, Do we have to go to Best Buy? or is there a direct Samsung route?

This too happens to me. Whenever I plug it into my laptop on the top USB slot, it doesn't recognize it. If I plug it in on the bottom USB slot, it does. Not sure why. This, however, is only the case if I'm using a different USB cable than the one that came with the phone itself. Once again, not sure why.
Perhaps you are using an alternative USB? Or plugging in on the top? Not sure how I can help you more than that, sorry. Hope you find a fix!
Sent from my Nexus S using XDA App

Have you tried a different USB cable?
Sent from my Nexus S using Tapatalk

unforgiven512 said:
Have you tried a different USB cable?
Sent from my Nexus S using Tapatalk
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Using official OEM cable that came with the phone. And, again, USB worked fine until I manually installed 2.3.4.

Well It is off to Samsung for repair
After time on phone with them and a factory reset belief is that the usb connector is defective. BTW Best Buy just hands off to Samsung 1-800 #
So Back to a barely functional G-1 for a while, glad I could find it!

DarkAgent said:
This happens to me all the time. However a restart of my phone and computer solves the issue.
Click to expand...
Click to collapse
Recently started happening to me, needed to transfer some files off, had to resort to dropbox etc.. rebooted phone+computer ,still not working.
Came good a few days later using same equipment, same cable,
Mysteriously fixed itself ?

Ok getting epically pissed

Ive been trying to root my KF for about a week and for some reason i am completely unable to do it even though i followed multiple guides to the exact letter, my problem i that no matter what i do my KF will not show up under "adb devices". so i would rele like some help if you guys r willing to give it, also dont feel the need to simplify things, definitely not a noob at this kind of stuff lol.

would suggest to uninstall all the old drivers:
http://support.microsoft.com/kb/315539/en-us
then use this ones:
http://forum.xda-developers.com/showpost.php?p=20855280&postcount=54
unplug and long power down the kf then power down (not restart) the computer sometimes helps (computer still thinks it's connected)
if computer is up again connect whithout powering the kf on (will do it itself)
allthrough i think you have gone through all this
no more ideas ...

Did you try using adb under linux ???
I just found the linux usb drivers much more stable than the windoof once.
But maybe uninstalling the old drivers under win will do the trick too.

Talk to vashypool in irc he could help u
Sent from my SGH-T989 using xda premium

i got epically pissed yesterday as well because of something similar. tried on my wifes computer and it recognized but wouldn't on mine. mine also didn't recognize my phone or as a removable disk though so i figured something was screwed up. i just reinstalled windows, it was about at it's 6 month format time frame anyway and had the day off so figured why not lol

roppetty said:
i got epically pissed yesterday as well because of something similar. tried on my wifes computer and it recognized but wouldn't on mine. mine also didn't recognize my phone or as a removable disk though so i figured something was screwed up. i just reinstalled windows, it was about at it's 6 month format time frame anyway and had the day off so figured why not lol
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On my pc it won`t recognize to (Windows 7 x64 ) so i had to use my moms pc (Windows 7 x86 ) but i didnt have this issue when rooting my nexus s with the stock SDK drivers .
Sent from my Amazon Kindle Fire using XDA Premium App

I had a similar experience. The first time installing TWRP, it was stuck on the FFF boot screen. I installed the drivers but every time I connected the KF to the PC, it would not detect properly. Several connects and disconnects later it showed up properly in the device manager.

I have seen this before with other Android devices. Some computers USB bus can't detect certain USB devices. Annoying. Maybe try another computer?

HD2 stuck at go go go!

Hello all,
I want to start off by apologizing if this has been answered somewhere else........because if it has....I simply just cannot find it. I have been looking for hours and hours because i know people don't like reposts, but alas I don't know what else to do.
My Dad brought me his HD2 about a year ago complaining that he didn't want windows mobile anymore and he had actually been trying to install android following the instructions here on xda. Well I helped him get it installed using magldr and it has been working great. The other day he dropped his phone about 8 feet and broke the screen. The phone still worked fine, just a nice crack or 2 or 3 in the middle of the screen. He had the phone replaced but now whenever he boots it just gets stuck at go go go!
I have tried task 29, but when it comes to the screen that says current phone version it is blank then the next screen it tries to update but then it fails (see attachment). So i opened the Windows mobile device center to see if it was seeing the phone and sure enough it isn't syncing and i am not sure how to get it to sync. I did read however that I could just take the phone to the bootloader (the screen with the 3 colors), make sure that it said usb at the bottom and task 29 from there, but i got the same result.
I am pretty sure the radio is a 2.15.5* version, although i dont remember for sure because i did this so long ago. I thought it showed the radio on the bootloader screen, but now that i look it does not. It is on SPL-2.08.
Any ideas, thoughts or suggestions would be greatly appreciated. Thanks in advance for the help.
signed -senior frustrated

try using windows XP (activesync) and reflash...

troubleshooting step 1
phezthie said:
try using windows XP (activesync) and reflash...
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Click to collapse
Thanks for the suggestion!
I am using windows 7, but i do have windows xp mode. I installed activesync in the VM but it still cannot see my phone. I went into the bootloader and connect the cable, it changed to usb so i thought i would try and run the RUU exe and see if i would have any luck, but i am getting the same result. I am guessing the phone has to be recognized by the active sync, am i right? How can i go about getting it to recognize it?

You should try to reflash it with a stock ROM from microSD and see if everything else, but usb port, is OK.
NB It seems your usb port is faulty...

[Q] Formated Nexus 7 2012, now what?

Hello all!
I'm just guna say, this might get long winded so, TLDR, Nexus 7 has no OS, I can get into the boot loader, the only thing I can actually do is get into TWRP v2.8.01, computer doesn't recognize it, can't get it to even see a flash drive that I've formatted to Fat32, now what?
For those who want some background. I got my N7 refurbished from ebay, if that matters at all. First thing I did was update it to Kitkat and root it. Installed some apps and was happy with it for a few months. About a month or so ago it stopped connecting to the Google Play Store. I wasn't bothered by it too much. But as time goes on, I find new apps and would like to use them. But obviously can not.
So, just to be safe, I wrote down all the apps I still had on it just in case they didn't want to load back up. Did a factory reset, still couldn't connect. Looked online and cleared caches and stopped services. Still didn't work. When I went onto the GPS, heh, on my computer it said that I had no devices so that was a clue of some sort. I could still go onto Youtube and log in and use it just fine. Just nothing in the store. So I decided to try something else.
What that was was to clear all my data with TWRP. Went to put in my email and password, couldn't connect, tried another wifi connection, still no go. I was able to use it, but the Play Store still didn't want to play nice. So in a bit of, "rage" we'll call it. I formatted it and now I'm where I am now. With a tablet that won't boot, just sit at the Google logo for up to 5 mins, as long as I've let it sit there for anyway. I have downloaded the Nexus Root Kit and tried to use that, but my computer won't even see my N7 now. In the bootloader or TWRP. So I can't even get anything onto it now.
So, what now? Do I have a bricked tablet that won't do anything or is there something an Android Guru out there can help me with? I'd like to keep it. I mainly used it to read and for various videos.
I have posted on forums.androidcentral but after a week and almost 300 views, no one has made any comments. I'm sorry for my ignorance if I'm missing something.
Thanks! I shall be hoping for good news.

So, does ADB recognize your tablet or not when you type "fastboot devices"?

I take it you mean shift+right clicking in the platform tools folder, open command window here, and typing that into the command prompt? If so, then no, it doesn't show up.

Waslow said:
I take it you mean shift+right clicking in the platform tools folder, open command window here, and typing that into the command prompt? If so, then no, it doesn't show up.
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Can you go into the bootloader? Did you install the right drivers?

I can get into the boot loader just fine. Recovery sends me to TWRP 2.8.01. I've got the drivers from the Android SDK Manager, Rev. 11 apparently. Would that be any different from the standard drivers that get installed when you hook up the N7? Well, when it works?

Waslow said:
I can get into the boot loader just fine. Recovery sends me to TWRP 2.8.01. I've got the drivers from the Android SDK Manager, Rev. 11 apparently. Would that be any different from the standard drivers that get installed when you hook up the N7? Well, when it works?
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That is correct. Use this: http://forum.xda-developers.com/showthread.php?p=48915118#post48915118
And if doesn't work check in device manager.
If it works flash the latest factory image and then you will be good to go

I've already had that installed and set up and nothing pops up in the device manager. I've also tried all the usb ports on my computer to no avail.

Waslow said:
I've already had that installed and set up and nothing pops up in the device manager. I've also tried all the usb ports on my computer to no avail.
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Then try the driver manual in nexus root toolkit

I can follow the instructions, but that doesn't resolve the fact that my computer can't see the Nexus .

go into device manager and delete every single entry that suggests anything to do with a phone, tablet, google device, nexus device, ETC. if you dont do that first, this will probably not work.
once you delete every single entry in there, go to the top command bar and somewhere in those menus is an option to show disconnected devices. delete everything again as above.
now, does your tablet still charge on the AC plugged into the wall? does it still charge when plugged into the computer usb? drivers are NOT required for usb to supply power. if so, the usb connector is probably OK. if not, your usb connector may be toast.
next, connect to the computer. does windows show any device connected? if not, try a different usb cable. report your findings back.

Sorry for the late reply.
There is nothing in the device manager related to my Nexus, which is odd, it had entries for flash drives, a camera, and my phone. All of which were in the disconnected devices. I got rid of just for the sake of it. Nexus charges just fine, either from the wall or any of my usb ports. If there is no way to make ANY computer see my Nexus, is it safe to say it's bricked?
I do have a cousin who's fluent in Linux if that means anything. I know that Android is a flavor of it. Might work better if both devices speak the same language. Grasping for straws I know.
Again, thanks for the help fwayfarer, GtrCraft, and Fobos531!

If I am reading right, you did NOT try a new USB CABLE yet, did you?
Try a known good USB cable, what I mean by that is try a cable you KNOW works for data transfer on another device and report back.
Connecting it to a Linux machine isn't going to make any difference in my opinion.

I have 2 cables and they transfer things just fine with my phone and my Kindle. I just downloaded everything off of both things, and transferred them back. No issue with the cables. I just popped open my Nexus and it looks like the usb connector and ribbon are fine. I did wiggle them a little but to no avail.

Pull the battery cable, smash the power button for a few minutes, reconnect and try again. It won't recognize a USB thumb drive in bootloader or recovery to my knowledge, BTW. I noticed you mentioned it not seeing one.

I unplugged the battery, hit the power switch for a while, plugged the battery back in, plugged the usb back in, nothing. Still nothing. I had read before that you can put the version of android you wanted on a flash drive. With an otg cable you could use that to update/install what you wanted.

You're probably right, I haven't tried using one in recovery for a long time. You didn't change the battery or anything recently did you?

Nope, haven't replaced anything in the Nexus. The only thing that I could think of that could be wrong is the usb connector. But for it to "fail" at the same time I formatted everything, too much of a coincidence.

Over a week bump

I ran into a similar problem about a year ago. Unless your tablet is connected to the computer you will not see it show up it the windows device manager. You should be able to connect your N7 to a work computer & it should go out for the drivers. If not, then you are Sol. You might have a blown main board.

The only thing my N7 does when I plug it in, is that it charges. That's the only thing I can get it to do. Well, this sucks. If I really have a bricked, or worse, tablet, it's still good for its screen and other bits.

Fastboot issues

Hey everyone, so when I try to use any tool that relates to fastboot, be it the Xiaomi ADB/Fastboot tools, the Mi Unlocker or anything, the phone simply isn't detected and I can't start the process.
When I plug in the phone I hear the sound indicating it's connected, but then whenever I try anything like refreshing the Mi Flash tool or opening the ADB/Fastboot tools I hear the disconnect sound.
I've tried reinstalling the adb fastboot drivers, tried everything I could and for some reason this only happens on my PC.
I should also note that ADB works perfectly though, and I've used it to debloat my phone with no issues.
My setup is as follows in case someone can point out what's wrong:
AMD Ryzen 3 2200G
Gigabyte A320M-S2H Motherboard
MSI AMD Radeon RX 570 8GB
1 TB Seagate HDD
240GB ADATA SSD
Windows 10 1903
Thanks in advance for the help!

I'm not 100% sure about this, but I think that turning off driver signing enforcement in Windows could help

Sithhy™ said:
I'm not 100% sure about this, but I think that turning off driver signing enforcement in Windows could help
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Click to collapse
That was the first thing I tried as well. and now it says on the corner of my screen "Windows 10 Test Mode"
I did it through both the cmd and the advanced startup

I also faced this. I found the complete solution. I thought of making a new thread for this but got too busy.
So If am not wrong, whenever you connect your phone in FASTBOOT mode the phone immediately reboots or Shows a message at the top left corner "Press any key to Shutdown" and it's already been disconnected from the PC.
The reasons behind this mess are vast.
In most cases it is happening because of the Ryzen CPU.
Let's be clear with one thing. WINDOWS HAS GOT NOTHING TO DO WITH IT. So please don't waste your time installing a new windows. Windows 10 is just fine. (BUT I KNOW IT SUCKS! ?)
So what is it with Ryzen? Well people have faced issues with Intel too. But the masses had this with Ryzen.
USB PORT! Is the problem. Even if you use the inbuilt USB port that's USB 2.0 NOPE! It's not gonna work for the most part. And even it works by luck, the next time you reboot your PC? Be ready to screw your head again.
Solution?
Go beg borrow buy or steal a USB 2.0 HUB for yourself.
A cheap low end one. It works like freaking charm.
Or just go for another PC with the 2.0 ports. PC Lappy all the same but make sure the Lappy is not a new generation one.
HUB is the best solution to go for.
Chao!?

cat4443 said:
I also faced this. I found the complete solution. I thought of making a new thread for this but got too busy.
So If am not wrong, whenever you connect your phone in FASTBOOT mode the phone immediately reboots or Shows a message at the top left corner "Press any key to Shutdown" and it's already been disconnected from the PC.
The reasons behind this mess are vast.
In most cases it is happening because of the Ryzen CPU.
Let's be clear with one thing. WINDOWS HAS GOT NOTHING TO DO WITH IT. So please don't waste your time installing a new windows. Windows 10 is just fine. (BUT I KNOW IT SUCKS! )
So what is it with Ryzen? Well people have faced issues with Intel too. But the masses had this with Ryzen.
USB PORT! Is the problem. Even if you use the inbuilt USB port that's USB 2.0 NOPE! It's not gonna work for the most part. And even it works by luck, the next time you reboot your PC? Be ready to screw your head again.
Solution?
Go beg borrow buy or steal a USB 2.0 HUB for yourself.
A cheap low end one. It works like freaking charm.
Or just go for another PC with the 2.0 ports. PC Lappy all the same but make sure the Lappy is not a new generation one.
HUB is the best solution to go for.
Chao!
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Alrighty! I've seen this solution before so i'll probably give that a try. Thanks for the help!

DanielA97 said:
Alrighty! I've seen this solution before so i'll probably give that a try. Thanks for the help!
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Wishing you all the best!

cat4443 said:
Wishing you all the best!
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It worked!!! Thank you so much!

DanielA97 said:
It worked!!! Thank you so much!
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Glad!!