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USB unknown device

I've tried the drivers from Samsung, Keis, ODIN one click. None of them worked on 4 different machines, Windows 7 both x64 and x86(which was a fresh install), and two Windows XP machines. I tried it on Ubuntu(10.04 LTS) and that recognized the captivate.
Anyone know how to get one of those to correctly recognize my Captivate so I don't stuck on Samsung's/AT&T's 2.2

uninstall all of the driver that you downloaded. uninstall kies. then go to samsung.com search for the captivate, choose you phone, click the 'i own this' button. then go to get downloads, software. click on the .zip file icon next to usb drivers. if that didnt work uninstall them then download kies again. if it still doesn't install them, open kies, click menu, reinstall drivers

What is it that you're trying to do?
Sent from my SAMSUNG-SGH-I897 using XDA App

If it is coming up unknown device try another port. You may want to try another microusb cable as well.
Sent from my SAMSUNG-SGH-I897 using XDA Premium App

I've always had luck with the drivers in the captivate aio toolbox. Even on a fresh win7 64bit when I replaced my boot drive with a ssd a month ago.

Samsung really failed at the USB drivers for the Captivate. I would expect to be able to install the drivers from their website. Plug in my phone, and have it working.
trell959 said:
uninstall all of the driver that you downloaded. uninstall kies. then go to samsung.com search for the captivate, choose you phone, click the 'i own this' button. then go to get downloads, software. click on the .zip file icon next to usb drivers. if that didnt work uninstall them then download kies again. if it still doesn't install them, open kies, click menu, reinstall drivers
Click to expand...
Click to collapse
I tried that before, didn't work.
bornjamerican said:
What is it that you're trying to do?
Click to expand...
Click to collapse
I'm trying to:
1) connect as a mass storage devices. Yes I know turn on USB debugging and to mount the drive.
2) flash back to stock 2.1 or root my phone so I can install a custom ROM on it. Might go with CM7/MiUi or something from Team Phoenix. So use Odin3
shinji257 said:
If it is coming up unknown device try another port. You may want to try another microusb cable as well.
Click to expand...
Click to collapse
Tried all of the ports on the computers. I don't have another microusb cable to test to see if that's the problem, but I'll check that tomorrow.
Johnnie5000 said:
I've always had luck with the drivers in the captivate aio toolbox. Even on a fresh win7 64bit when I replaced my boot drive with a ssd a month ago.
Click to expand...
Click to collapse
I'm going to try a fresh install of windows 7 32-bit with aio toolbox see if that works.
Tried my friends brand new microUSB cable. It worked.

I have tried 4 known good cables know, 4 different computers and every USB port available on all 4 of the PCs I tried. Only once did it identify the device and install the drivers and I was able to root it but I still can't sideload because after the reboot after rooting it is back to device not recognized/unknown device. This has been a total pain. Any suggestions? I'm not with AT&T any more so I am out of luck for just bringing it into a store and asking them to take care of it.
Edit: Sorry for bumping an older post but I did it instead of starting a new thread.

rmriggin said:
I have tried 4 known good cables know, 4 different computers and every USB port available on all 4 of the PCs I tried. Only once did it identify the device and install the drivers and I was able to root it but I still can't sideload because after the reboot after rooting it is back to device not recognized/unknown device. This has been a total pain. Any suggestions? I'm not with AT&T any more so I am out of luck for just bringing it into a store and asking them to take care of it.
Edit: Sorry for bumping an older post but I did it instead of starting a new thread.
Click to expand...
Click to collapse
If you're just trying to transfer apk files to it for sideloading, you can use a wifi transfer app. I use Wifi File Explorer and it's great. You can connect to your phone via web browser and upload/download anything on the SD card.
Another option is to use an external SD card that you can remove and plug into your computer, transfer the files to it, then insert it back into the phone.
This won't work for connecting to PC apps like Odin, Heimdall, or Kies, but for simple file transfers it works like a charm.
Additionally, regarding other usb cables, you didn't mention what types of cables you used, so I'll throw in another thought. The cables that come with the Captivate don't work on some PCs (like my new iMac). Third-party, generic usb cables might not work, either (I tried some and got a whole lot of fail). The only cable that works for me is the one that came with my wife's Motorola phone. If you haven't tried one yet, I would recommend getting your hands on a Motorola cable and testing it out. You'll immediately notice the cable is much thicker. I don't know if that has anything to do with why it works when others don't, but there's something about that cable that others don't have.

Bad Phone?
Could it be the phone port is having issues?
I've had the same problem and it seems that the port on the Captivate is shot which may be your issue. it will always charge; but tends to cause a lot of profanity when trying to get a PC connection to transfer files or flash it. It will be seen, then immediately play the 'unplugged' sound from windows. I've sat there and had it play the tones of plugged in and un plugged over and over again just by tilting the phone from side to side. No matter what cables I use (tried several but they are all samsung due to the recessed port). If it establishes the connection; I have to be very still with it or it'll lose it. If it loses it; I get unknown device messages or not functioning messages on that port until I reboot the PC.
Trying to flash anything via ODIN takes a lot of patience.
Those same cables / USB ports are used on my wife's Focus without ever having a problem. I wrote it off as too much flashing / overclocking of my phone but am not sure.

hi i was having this issue as well. i solved it by:
1. download a good & stable miui rom, rename it to update.zip and place it into your sd card. i took the sd card out of the phone and used a adapter to connect the sd card to my PC since i can't access my sd card through the usb port.
2. put the sd card back into my phone, turn off my phone. press and hold volume up and down buttons, then press n hold the power button till the screen shows something.
3. select install from sd. wait until the installation finishes and select reboot the phone.
4. when you're in your new miui rom, try to connect your phone to the pc via usb port again.
this worked like charm for me.
about the miui rom, i suggest you to use the one from miuiandroid.com (the UK version)
after flashing the rom im able to connect via usb and use mass storage.
hope this helps

Also, when you uninstall drivers, don't forget to look in the program files for anything that may have been left behind and delete it.

From the description it sounds strongly like you are actually experiencing a port failure which is common on the Galaxy S devices. PM me if you need this repaired...

Only try another usb cable, i bricked my cappy with a bad contact cable on odin, unknown device too, new cable=i897 device on windows notifications
try and feedback!

strange, this only happened to my when i soft bricked my phone. try connecting it to your computer in download mode

I had this issue once before. Here is what I did which resolved the problem. I was using a windows 7 PC
1. Download the ADB kit and extract it to C drive.
2. Connect your mobile to the PC on USB port
3. Wait for the drivers to be installed automatically (it might give you a failed to install message)
4. Never mind that message. Open Device Manager
5. In Device Manager, if you expand the "Universal Serial Bus Controllers", you'll see a device that has yellow question mark against it. This is your phone and since drivers are not installed properly, it has the question mark.
6. Right click that device, and select "Update Driver".
7. IN the window that comes up, select "I'll select a driver".
8. Browse to the folder where you have extracted the ADB kit on C drive
9. Check include subfolders and click Next.
10. The drivers should be be installed and your device should be identified by the computer.
Let me know if it works for you.

Problem with connecting my phone to my PC in USB/Harddisk mode (only in some ROMs)

Hi out there.
Like mentioned in some threads in dev section i have problem in some ROMs with connecting my phone to my PC in USB/Harddisk mode (but only in some).
When i get connected i see the window where i can choose the mode but when i use USB/Harddisk mode the sdcard is going to be unmounted and nothing happens.
I can see drive letter in my PC but i can't get access.
USB-Debugging is on in every Rom.
The Roms i get no problem:
- All Virtuous Unity Roms
- Shipped Pre-rooted Desire S stock by Adidas108
- RCMix3d 3.5 S v1.2 [Stock & OC Kernel] by proxuser
The Roms where i have the problem:
- VoidU
- All OTA Roms by proxuser, michaelm007
- Hyperion/Endymion
So cause it works sometimes i don't think its a hardware defect.
Maybe it is driver related?
I have installed various HTC Sync versions, AlpharevX fastboot drivers, uninstalled, reinstalled... no changes.
So what drivers do you use?
Other ideas?
Interesting for example michaelm007's Untouched Saga don't work and Pre-rooted stock by Adidas108 works.

I think i have the same problem. Windows 7 just saying unrecognized device. With some roms my phone only charge and with some roms it pop up that is connected to PC and what type of connection i want.

I have no problems with usb connecions
Try to download the lastest htc drivers,
And anyway,there is a program,named Android commando(or something like this,i don t remenber very well)where you can open your phone on the pc also in charging mode,like adb.
With this you can open the android system,so system,data etc.. and the sd card
Sent from my HTC Desire S using XDA Premium App

cant find the program.

USB Doesn't work

I have the mobile in s-off and with root permissions, MIUI had installed 2.2.17, and had no problem to connect the mobile to the PC and the mobile ask me if I want to connect as mass storage or just load. Until a few days left to ask me ... Mac thought it would be and the same probe in windows, restart the phone and nothing. I tried to install another ROM the CyanogenMod 7.1 and the problem continued. Now I'm back to the latest version of MIUI I think it's 24 and still have problems. I tried to format the microSD card from android and pc / mac but nothing. To say that from a file browser in android if I see all the files correctly.
I tried installing a version prerooted but the problem continues.

pasteles said:
I have the mobile in s-off and with root permissions, MIUI had installed 2.2.17, and had no problem to connect the mobile to the PC and the mobile ask me if I want to connect as mass storage or just load. Until a few days left to ask me ... Mac thought it would be and the same probe in windows, restart the phone and nothing. I tried to install another ROM the CyanogenMod 7.1 and the problem continued. Now I'm back to the latest version of MIUI I think it's 24 and still have problems. I tried to format the microSD card from android and pc / mac but nothing. To say that from a file browser in android if I see all the files correctly.
I tried installing a version prerooted but the problem continues.
Click to expand...
Click to collapse
Have you installed the required drivers for your phone? Just install HTC Sync and it will do that for you automatically.
(At least for Windows - I don't have a Mac so i can't comment on that)

I tried with HTC Sync and nothing. I changed the kernel version of a saga tiamat 1.1.5 (before had the kernel 2.6.35.14-cyonagenmod + [email protected] # 1)

............ UP!!

Have you tried to mount as USB disk when in recovery?

Yes. Nothing

pasteles said:
I have the mobile in s-off and with root permissions, MIUI had installed 2.2.17, and had no problem to connect the mobile to the PC and the mobile ask me if I want to connect as mass storage or just load. Until a few days left to ask me ... Mac thought it would be and the same probe in windows, restart the phone and nothing. I tried to install another ROM the CyanogenMod 7.1 and the problem continued. Now I'm back to the latest version of MIUI I think it's 24 and still have problems. I tried to format the microSD card from android and pc / mac but nothing. To say that from a file browser in android if I see all the files correctly.
I tried installing a version prerooted but the problem continues.
Click to expand...
Click to collapse
A friend once ran into a similar problem. It turned out to be luck had run out on his micro-USB port. A similar problem I once had turned out to be faulty USB ports on my laptop. I'd suggest you look into both scenarios.
*I'm saying it's likely a hardware problem*

Saipro said:
*I'm saying it's likely a hardware problem*
Click to expand...
Click to collapse
If he tried to mount on other computers, with different OS, and still no luck, then yes, I guess it is definitely a HW problem.
@pasteles
Does the phone still charge?
I have the same problem with my TouchPad, no mounting as usb disk at all, when charger is connected the charging symbol comes up, but the current coming through the port is not enough to charge it. So I think the USB port has some faulty pins. In any case, faulty USB.
You can take a chance with the warranty or find someone able to replace the port.

i ran into this problem a few weeks back also and the problem was a faulty usb port and cable........ i changed the cable and reinstalled the drivers and i was back to a working usb

Blush91 said:
i ran into this problem a few weeks back also and the problem was a faulty usb port and cable........ i changed the cable and reinstalled the drivers and i was back to a working usb
Click to expand...
Click to collapse
Right, I forgot the part about the faulty USB cable. Most often, it's actually the cable. Then the computer's USB port. Unlikely (and worrisome) is the probability of the micro-USB port of the Desire S having gone bad.

[Q] USB Woes

I'm on Open Your Eyes VRBLK3,with rooted & Unlocked Bootloader. I was going to flash a ROM so I made a nandroid, etc. I went to transfer the ROM from my PC to my SD card via USB but when I plug in my phone it makes the noises windows makes for USB devices, my device shows the USB symbol in the pull down and says "Connected as an Installer". When I touch for more options they are Media Device (MTP) or Camera (PTP) and my device doesn't appear as a drive like it always has in the past.
What am I missing?
Thanks

Did you try Samsungs newest driver? I randomly get problems with usb connecting too. Usually after I flash a non stock kernel it kills usb working right for me. On windows 8 and 7
---------------------
Cleanrom 5.5.1

Got it figured out, mtd does allow all file transfers, I'm an idiot, thx
tappity tap tapped on my SGS3

Need Stock Rom

I want to flash stock rom 2.2.1 indian firmware back on my samsung galaxy fit as it is unable to connect to my computer and laptop...my mobile charges but no usb data connection(comp shows a message usb device not recognized) .....result of my little experiment( i suppose.. it is)....Since i am unable to connect ..how can i use odin???( used before when all was well)....
in xda forums i read about converting .tar file(of stock rom) in cwm flashable zip is possible through Android Kitchen,,,,but i dont want to take any risk by creating anything as i haven't created anything before....
PLEASE I AM ASKING FOR HELP ANY DEV/MEMBER WILLING TO guide or making a flashable zip...
I read threads on adb ,, terminal emulator ,,converting of .tar into .zip files,,, and i dont want to take any type of risk AND BY FLASHING STOCK ROM I WILL ABLE TO TAKE TO SAMSUNG SERVICE CENTER TO FIX USB DATA CONNECTION PROBLEM (they will charge me more if they see jellybean in galaxy fit for flashing stock rom)....
HHUGE THNX IN ADVANCE..:crying:

Did u use odin without booting into download mode!!!

MajinSaiyan4 said:
Did u use odin without booting into download mode!!!
Click to expand...
Click to collapse
I used odin to flash 2.3.6 firmware in download mode and it installed successfully, i wanted my mobile to connect to external storage device(i.e. pen drive) so i made a cable myself and also attache charger power source to that cable(hoping it would work.e. mount & read pendrive) ..After that my mobile wouldn't cnnect to my comp or laptop via usb data cable....it would charge but a usb data connection was not possible .. And finally after trying various methods i think it now is a hardware malfunction(becoz of me) and it should be given to a service center..
Rest all is working fine i can flash diff roms , camera ,wifi all working now using pacman rom so i thought service center would charge me more if i gave my mobile as it is.. they could easily charge more for seeing other rom installed So i wanted stock rom flashable by CWM..
So anyone's help is appreciated.. thanks...

mni ANKIT said:
I used odin to flash 2.3.6 firmware in download mode and it installed successfully, i wanted my mobile to connect to external storage device(i.e. pen drive) so i made a cable myself and also attache charger power source to that cable(hoping it would work.e. mount & read pendrive) ..After that my mobile wouldn't cnnect to my comp or laptop via usb data cable....it would charge but a usb data connection was not possible .. And finally after trying various methods i think it now is a hardware malfunction(becoz of me) and it should be given to a service center..
Rest all is working fine i can flash diff roms , camera ,wifi all working now using pacman rom so i thought service center would charge me more if i gave my mobile as it is.. they could easily charge more for seeing other rom installed So i wanted stock rom flashable by CWM..
So anyone's help is appreciated.. thanks...
Click to expand...
Click to collapse
what I understand from your posts is that your phone is perfectly fine but there is a problem with your pc and data cable.
Check with some other data cable,and re-install the samsung drivers for "device not recognized" error.
Use other usb port to check whether its a problem in your pc.

Harryhades said:
what I understand from your posts is that your phone is perfectly fine but there is a problem with your pc and data cable.
Check with some other data cable,and re-install the samsung drivers for "device not recognized" error.
Use other usb port to check whether its a problem in your pc.
Click to expand...
Click to collapse
with samsung data cable i hv nokia and micromax data cable as well.. tested wiyh my friend's laptop.. didn't detect but charging was on...then removed samsung drivers,cleaned registry on windows 7,reboot then installed samsung usb driver 1.4.8..Then tries to connect , same problem(charging but no detection)... Opened settings-->Storage--->clicked menu---->USB computer connection click-->(three options MTP,PTP,Mass Storage) as soon as i click mass storage it force closes displaying message "unfortunately,settings has stopped."
What to do now??..

mni ANKIT said:
with samsung data cable i hv nokia and micromax data cable as well.. tested wiyh my friend's laptop.. didn't detect but charging was on...then removed samsung drivers,cleaned registry on windows 7,reboot then installed samsung usb driver 1.4.8..Then tries to connect , same problem(charging but no detection)... Opened settings-->Storage--->clicked menu---->USB computer connection click-->(three options MTP,PTP,Mass Storage) as soon as i click mass storage it force closes displaying message "unfortunately,settings has stopped."
What to do now??..
Click to expand...
Click to collapse
i never saw any such option on any rom yet!
whenever you connect with usb to a PC you get USB connected notification..click on it and enable mass storage.
never saw MTP & PTP in usb connections.
Which rom are you using?
If its 4.+ then try this

Harryhades said:
i never saw any such option on any rom yet!
whenever you connect with usb to a PC you get USB connected notification..click on it and enable mass storage.
never saw MTP & PTP in usb connections.
Which rom are you using?
If its 4.+ then try this
Click to expand...
Click to collapse
In Device Manager in Universal Serial Bus Controllers i uninstalled everything from ASMedia XHCi controllers to USB Root hub... all of them, then clicked scan for hardware changes then i connected my device to computer, then clicked the app USB mass storage for ics and JB ....on computer the elements(USb Root hub, etc.) reinstalled and there it detected my device as unknown device,,,,then for 5-10 sec a message flashed
something like this ,,...". I.I.I.I.I.I.I.I.I Ata mass storage " then it stopped showing not installed...
Using Pacman rom ..does have mtp,ptp,mass storage options..( when i tick any one of the three options it force closes)...
I googled over net on connectivity issue and will need sum time to format c drive and then try again...:fingers-crossed:

I wonder once in odin multi downloader i ticked the debug option only then i clicked delete driver option which may have caused the problem.......

Finally problem solved...replacing charging IC ( as the repairman said) solved comp connection problem then flashed stock rom....