Database Develop

[Q] USB device not recognized

Hi, I've been transferring some stuff to my galaxy s and now i'm getting this error everytime i attach the USB (USB Device not being recognized). I already reinstalled the samsung USB drivers, uninstalled and reinstalled USB root hub drivers, used a different USB port and restarted both PC and galaxy. Anyone have any idea how i can get my device to get recognized by my pc?

no one's encountered this problem before?

I get this on and off - i'm on Win 7. I tried all 4 ports and my hub and sometimes it plays ball - sometimes not.
I often find if I change the phone from 'mass storage' to 'ask on connection' it seems to improve its chances.
Worth a try.
Homer

I tried this as well including turning USB debugging on and off.. no luck though. Only thing i haven't done is format the internal SD, but I dont want to go there unless there really is no chance of fixing this. Any help you be greatly appreciated!

psionicmatrix said:
Hi, I've been transferring some stuff to my galaxy s and now i'm getting this error everytime i attach the USB (USB Device not being recognized). I already reinstalled the samsung USB drivers, uninstalled and reinstalled USB root hub drivers, used a different USB port and restarted both PC and galaxy. Anyone have any idea how i can get my device to get recognized by my pc?
Click to expand...
Click to collapse
i recently just bought a captivate from a seller and found out mines is doing the same thing havent had no luck getting it connected to pc to mount but does charge on data cable after seeing it has been modded to froyo 2.2 rom but trying to see if any one know away to fix this.

[Q] Phone semi bricked and unknown device in download mode

Hey all,
I've got a problem related to my Micro USB port (at least I think it is).
[Long story]
I've got a very annoying issue right now. Today I flashed Team ICSSGS RC4.1. Later when I connected my Galaxy S to my PC with the usb cable, no recharging icon appeared and my pc did not react to the connection at all.
Thinking it was a bug in RC4.1 (as OneCosmic RC 2.3 had the mass storage issue) I searched the ICSSGS thread, but not a single issue about mass storage mode was posted. So I flashed Devil kernel, hoping to fix it, but it didn't. Reflashed RC4.1, but problem still persisted.
I went radical and recovered a nandroid backup in CWM of ICSSGS RC3.0 (the one is was running earlier today), but somehow the recovery failed and left me with a semi-bricked phone. (Actually the 2nd time in a row when recovery semi-bricked my phone.)
Only download mode works. Recovery and normal boot bootloop.
[/Long story]
In short:
When connecting to PC to flash with Odin:
-At first the PC did not even notice the phone being connected through USB. Nothing happens.
-After blowing in the contacts of the Micro USB port, PC recognizes connection, but gives "Unknown device" error upon connecting. Reinstalling Samsung drivers does not work at all. Tested on laptop and home PC.
-Somehow I always have to blow into the Micro USB port to create contact and to get the PC to recognize a connection. But that's about it. "Unknown device" every time.
-When I plug in wall charger, the big battery icon appears, but stays grey all the time and after half a minute the phone boots, starting the bootloop.
Could it be that my Micro USB port is broken?
Any solution for this?
Thanks in advance!
I feel so stupid for recovering that nandroid backup. Otherwise my phone would still be working...

you will need the nexus drivers for your comp found here : w w w.multiupload.co.uk/BUCFT8M42 as your samsung drivers are no use now.

Thanks for your advice: Going to test it right away.
Unfortunately your link does not work for me.

I had the same problem but replacing the cable solved it.

Sorry for the duff link http://www.multiupload.co.uk/BUCFT8M42N

japperrrr said:
I had the same problem but replacing the cable solved it.
Click to expand...
Click to collapse
Tested this morning with someone else's cable, still the same issue.
Tried the Nexus driver, but still nothing. Also having troubles again to let the usb connection register. It connected after cleaning it, but now it does not seem to connect at all.
Could it be that the phone is completely busted and therefor breaks usb connection?
Haven't heard such a story yet, but is it possible?

I've got it sorted out.
Since it might be helpful for others that are searching for a solution:
1. I cleaned out my Micro-USB port using micro interdental brushes and a few drops of isopropyl alcohol. It also doesn't hurt to clean the contacts of your USB cable, just to be sure.
2. Connected the phone to my PC. This time my pc recognized it as a serial gadget.
3. Disconnected the phone and installed Nexus S driver (because of ICS rom on my Galaxy S)
Next connection my device was automatically recognized as an android phone.
Odin saw my phone as well and I could flash again!
My phone is back on Team ICSSGS RC4.2.
Thanks everyone for helping!

Same Issue cant fix
Hey guys im glad to see others are having the same issue but i cant seem to fix mine.
Assume im an idiot and ive missed something out but ill explain my situation....
Galaxy i9000 - windows 7 32bit - put ics on it a few weeks back following a guide on youtube (had never used odin or anything like that before) got it working but now have no usb comm options in the ics settings. now when i plug the usb (when it does detect at all) it says driver havent worked - device manager shows unknown device - i try update the driver and it says the best driver is already installed.
Im completely stuck and want to revert back to gingerbread so i can use my usb functions again. If i can get odin to see my phone again ill be relieved.
Any ideas?
Cheers guys! Seán.
subcultural said:
I've got it sorted out.
Since it might be helpful for others that are searching for a solution:
1. I cleaned out my Micro-USB port using micro interdental brushes and a few drops of isopropyl alcohol. It also doesn't hurt to clean the contacts of your USB cable, just to be sure.
2. Connected the phone to my PC. This time my pc recognized it as a serial gadget.
3. Disconnected the phone and installed Nexus S driver (because of ICS rom on my Galaxy S)
Next connection my device was automatically recognized as an android phone.
Odin saw my phone as well and I could flash again!
My phone is back on Team ICSSGS RC4.2.
Thanks everyone for helping!
Click to expand...
Click to collapse

dieselno7 said:
Any ideas?
Cheers guys! Seán.
Click to expand...
Click to collapse
USB solutions http://forum.xda-developers.com/showpost.php?p=27205737&postcount=4571
But most of all, check your usb cable and try switching to another USB port after rebooting your PC

[Problem]Reboot when plugging USB cable to a PC or Laptop

I have a problem about my SGA.
it always reboot when I plug in my usb cable to a computer or laptop.
I tried changing rom and kernel but still it exist.
for more information:
Yesterday I change my rom to CM7. When I plug in my usb cable the screen turn black then later on it show zero(0) battery in the battery bar and in the lock screen.

same
urnamu said:
I have a problem about my SGA.
it always reboot when I plug in my usb cable to a computer or laptop.
I tried changing rom and kernel but still it exist.
for more information:
Yesterday I change my rom to CM7. When I plug in my usb cable the screen turn black then later on it show zero(0) battery in the battery bar and in the lock screen.
Click to expand...
Click to collapse
Same problem here....

There might be a problem with the charging ICs

Try this Method !
Try this !
Go to CWM and mount SD card and then Mount USB storage and then try plugging your Ace to the PC !
Let me know if it works ?

[Q] USB Hubs not working (Stock Samsung JB)

I tried to connect different USB Hubs via different USB OTG cables yet no matter what they do not work (besides clearly getting power).
I am running Stock ROM 4.1.2. Can someone please give me a pointer, how to fix this?

Try Putting the custom rom with airdroid or somthing like that and flash it with a full wipe (data/cache/dalvik/system)

Never mind. It might have been the USB Hub itself. I found USB Device Info to be quite helpful.

usb otg isnt working

I tried connecting my otg cable which was working before But the phone did not respond at all.
When I kept the cable connected(while my pendrive was still connected on the other end )without making any moment I turned my phone off and on. And woala it works but if I reboot my phone without the cable and then try connecting it with any device like storage media it does not just responds at all
All the devices used to work before. I haven't changed(neither updated) anything , running completely stock with a locked bootloader.
I tried it with an another Device as well as another cable both the cables were working and so was my pendrives.
I think it's some issue with the software!
It's giving me nuts... What should I do? Help me guys
Would be really thankful.

If you are rooted see if Chainfire's StickMount helps. Older,and doesn't require root is Chainfire's USB Host Diagnostics. This will be dependant on your ROM version. I know it doesn't work on my 7.1.2.
You might try cleaning your usb port.