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Please help...big problem....

Big problem. Suddenly my phone will not turn on. Sits at the white Galaxy S GT-I9000 screen and does not boot. When I put it into download mode and plug it into computer, its suddenly saying "USB Device Not Recognized".
What do I do? PC won't recognize it, it wont boot. can't flash it.....I'm freaking out here...

Did you flash anything to it or root it?

riwarren said:
Big problem. Suddenly my phone will not turn on. Sits at the white Galaxy S GT-I9000 screen and does not boot. When I put it into download mode and plug it into computer, its suddenly saying "USB Device Not Recognized".
What do I do? PC won't recognize it, it wont boot. can't flash it.....I'm freaking out here...
Click to expand...
Click to collapse
Hi Rick. Try to re-install samsung usb drivers. during this time, take out the battery from the phone. once finished installing the drivers, put back the battery into the phone. Go into downloading mode. Fire up odin, put in the necessary firmwares + pit files. Once done, then CONNECT your phone to the usb port of your computer.
Hope it's okay.
Edit: Let's hope that it is the computer usb drivers are corrupted. Alterntively, if you still can't do it, try it on another pc.

Nope. I was rebooting it to flash XXJPC to it, but couldnt do so because it was saying that USB message and wouldnt detect it. So I went into recovery, did a factory reset, and now it wont boot.

Another computer does the same thing *tears*

*BUMP*
Lets try a different route. I will pay a generous sum of money to anyone who offers to and does manage to fix this for me?

rick, looking at this, if your usb is not recognised, it is either the pc or the phone usb port might be damaged.
if it is a hardware issue, then use the bounty to get it fix.

I was at that same point with my vibrant. After failed attempts of getting into download mode using buttons, here's what I did.
Download and install samsung usb drivers and android sdk.
Plug into the computer and use adb to get into download mode (adb reboot download).
Then flash with odin.
Doing that worked for me when nothing else would. Try it ?
Sent from my SGH-T959 using XDA App

richan90 said:
I was at that same point with my vibrant. After failed attempts of getting into download mode using buttons, here's what I did.
Download and install samsung usb drivers and android sdk.
Plug into the computer and use adb to get into download mode (adb reboot download).
Then flash with odin.
Doing that worked for me when nothing else would. Try it ?
Sent from my SGH-T959 using XDA App
Click to expand...
Click to collapse
I can get into download mode just fine.....my pc just doesnt recognize the usb device. tried 3 differente pc's, 2 running win7 and one running xp.

Did you install usb drivers on each of the machines?
Sent from my GT-I9000 using Tapatalk

I installed the samsung USB driver executable. and I also tried to use those drivers that it installs to manually update the "unknown USB device" in device manager, but they won't take.

Try uninstalling all drivers, then stick a MicroSD in your phone before plugging it into the usb.

Assuming you have Samsung Kies in your PC, try to upgrade it at 1.5.1.10074_45.
How long do you wait the boot?? The first boot after flash is very long, wait at least 5 minutes with flashing "S".

I did not just flash anything. My phone got really hot and laggy (as I was using it while charging it via USB port) and so I rebooted phone in an attempt to resolve the lag. when I did, it would not go past the WHITE Samsung Galaxy S I9000 screen, does not get to the flashing S screen.

bump
please anyone able to help?

riwarren said:
bump
please anyone able to help?
Click to expand...
Click to collapse
if i understood you correctly, you have two separate problems:
a) your phone does not boot up
b) your phone is not recognized by any computer when plugged in
could be a coincidence, but probably is not. i'm guessing your bootloader got screwed up somehow. if it is a coincidence, it could be that your usb port on the phone is effed, or your usb cable is dead. try first using a different cable and see if your phone can be recognized by any computer. perhaps then you can go into download mode and reflash.
also, have a look at this post, might help you (although, if your usb is effed, there's not much point in trying any solution that involves your phone being connected to a computer): http://androidforums.com/780720-post3.html
EDIT: also, have your tried the obvious stuff, like pulling battery?

I ve seen many threads with the white screen problem ... it has in most cases been the drivers ... you desinstall all drivers from pc using Kies option for resinstall the drivers ... then you pull the battery off few sec (give it a min or two) then you get to download mode and you flash the beast ... dont connect your phone before launching odin or else it will not be recognized ...
for the few other people who didn't manage to fix it ... it was a hardware failure

That post you linked, is worth a try. But its for a motorola.....Where do I get my SGS bootloader to use instead?

ohh you were implying to try to use the motorola usb drivers?

bouzoubaa said:
I ve seen many threads with the white screen problem ... it has in most cases been the drivers ... you desinstall all drivers from pc using Kies option for resinstall the drivers ... then you pull the battery off few sec (give it a min or two) then you get to download mode and you flash the beast ... dont connect your phone before launching odin or else it will not be recognized ...
for the few other people who didn't manage to fix it ... it was a hardware failure
Click to expand...
Click to collapse
I never said anything about a white screen. and I am not uneducated on flashing SGS, or using Odin. Far from it. My phone was first showing USB symbol when it wasnt plugged into USB port, then phone started running really hot while charging and got really bloated like it was overheating. So I rebooted and its now force closing at the first boot animation. I can get into download mode and recovery, but will not recognize in any of the 3 computers all running different versions of windows on them, with either of my USB cables that I tried.

not reading in download mode?

ok. so I recently started using a different computer, it's windows vista. when I go to download mode, and plug the phone in the computer just says "usb device not recognized". I've got the latest drivers, and tried uninstalling then reinstalling again. any ideas as to what is going on?
Sent from my SGH-I897 using XDA App

Multiple ports?
CM7

I've tried front and back usb ports,
Sent from my SGH-I897 using XDA App

Try uninstall again.
Dl usb drivers but dont install. Save them to desktop
Plug in phone
Unknown device pops up, click on message. Click install custom drivers, navigate to where you saved uninstalled drivers are. Select
This has worked for some
CM7

Ok I uninstalled any versions of the drivers, when I plugged in my phone, the computer said unknown device as usual but it is automatically installing an "unknown device" driver. When I went to select the driver manually for it, it told me that there was no need to update and it didn't give me another option.

I should probably mention that originally, the computer recognized my internal sdcard when i mounted it. Now it isn't, and it won't recognize it in any mode.

Mik3D23 said:
I should probably mention that originally, the computer recognized my internal sdcard when i mounted it. Now it isn't, and it won't recognize it in any mode.
Click to expand...
Click to collapse
what rom are you using now? does the driver you installed came from the stock eclair or froyo. I get the same message after flashing from stock to custom roms. I just plug my phone again and the pc automatically searches and installs driver from gt i900 driver. My old PC is running win xp with android sdk manager in it aside from the kies mini it has which already has the samsung drivers which supports stock roms.

definitely wrong drivers...If your computer recognize it in normal mode as in to mount internal sd card, but says unknown device in download mode than try to download USB drivers from somewhere else...
I have noticed this that drivers from samsung website doesnt support the download mode...I have faced this problem...mine would ask for gadget serial..so i use this drivers...http://drivers.softpedia.com/get/MOBILES/Samsung/Samsung-Galaxy-S-USB-Driver-for-Windows-x86.shtml
Hope this helps

I'm running perception 10.4. I've tried several different download sources, and it doesn't read when I mount the sd card anymore. On my windows 7 computer it worked no matter what rom I had, and I didn't have to change drivers at all. I'll try that link and see what happens

Still won't work...

This happens to me all the time when attempting to flash back to stock. What I do is just keep doing battery pulls and switching usb ports. Eventually, it works!

OBatRFan said:
This happens to me all the time when attempting to flash back to stock. What I do is just keep doing battery pulls and switching usb ports. Eventually, it works!
Click to expand...
Click to collapse
lol How long will that usually take until it works..

I've tried pulling the battery and switching ports at least 15 times.. nothing happens. windows installs an "unknown driver" automatically, and if I choose the galaxy s drivers for it, it says the driver isn't compatible for my device. It's not even recognizing it's a phone, or a mass storage device, or any other usb device it can be.

Unknown Device
Was this ever resolved? I have the same problem. Unknown Device in Download Mode. ADB works, PC recognizes phone in normal mode.
The phone shows up in Device Manager when in normal mode. If I use ADB to reboot download, the PC immediately drops the phone and displays unknown device in device manager.
Have tried complete uninstall/reinstall of drivers including regedit. NO JOY.
Running XP SP3. Any ideas?

after upgrading to gingerbread my pc thinks it is an i9000.
try those drivers.
i have no issues though.

Replacement I897UCKB2 build is not seen by Windows 7

I have two windows 7 pcs that both recognized my replacement I897UCKB2 phone that I got a little over a week ago. I installed Kies on one of them to upgrade my wife's Cappy to UCKB1. I connected my phone and saw an error that it wasn't recognized. I have uninstalled KIES, the drivers, rebooted, cleaned out Samsung registry entries, rebooted (many times), tried different ports (including on the back), etc - no dice. I tried the other pc which hasn't had any changes and that doesn't recognize it either.
I know the cable is good because my wife's UCKB2 (was replaced as well) is seen no problem using the same cable and computer.
I have tried with my phone in debug and not - mass storage, KIES, ask on connection - etc. I did previously root the phone with SuperOneClick on this build. I was about to flash a custom ROM tonight after waiting a bit but now I can't get any computer to see it although the phone does start charging. I haven't yet tried linux and heimdall but that is about the only thing I can think of at this point.
I started wondering if Kies somehow caused a problem on the phone - maybe because it was rooted? I tried restoring CWM since I have Titanium backup working and busybox, etc. In CWM I tried "reboot into recovery" and then I see the original 3e recovery. I tried "reinstall packages" and it fails the signature verification. I have flashed ROMs many times in the past and have never been "stuck" like this... Any ideas?

I would try flashing the original stock eclair, there is an odin one click around that will do it... "I897UCJF6-final-OCD-REV0.exe". Then try kies mini.

crt60 said:
I would try flashing the original stock eclair, there is an odin one click around that will do it... "I897UCJF6-final-OCD-REV0.exe". Then try kies mini.
Click to expand...
Click to collapse
Thanks but that is the ODIN I have always used in the past. It doesn't even see the phone when I connect it though. The phone will start charging but windows doesn't recognize that I connected it.

RichMD said:
Thanks but that is the ODIN I have always used in the past. It doesn't even see the phone when I connect it though. The phone will start charging but windows doesn't recognize that I connected it.
Click to expand...
Click to collapse
I had a friend who had that problem. When he plugged his phone into his computer, the phone would start charging but Windows wouldn't even play a notification sound to show the phone was plugged in. He couldn't access USB storage mode or anything. He called Samsung and was told his phone would need to be reflashed. His three button combo didn't work, so we bought a jig on eBay. We could get the phone into download mode that way...but Windows still/I] wouldn't recognize it. He called Samsung again and they replaced it under warranty, without any hassle.

Well, are you sure that you have your usb drivers installed correctly? Have you tried seeing if adb is recognizing the phone? Also, make sure that it is plugged in on all sides on the phone end of the the USB (sometimes the phone charges when it is plugged but unless you plug it in all the way, the computer won't recognize it)
try those...

pwneman said:
Well, are you sure that you have your usb drivers installed correctly? Have you tried seeing if adb is recognizing the phone? Also, make sure that it is plugged in on all sides on the phone end of the the USB (sometimes the phone charges when it is plugged but unless you plug it in all the way, the computer won't recognize it)
try those...
Click to expand...
Click to collapse
Thanks for the replies. I know the USB drivers are good because I can easily mount USB storage on my wife's captivate - same exact I897UCKB2 build with the same cable. Additionally, a second pc won't see my phone even though it did before. I have tried at least 6 different ports numerous times. I am thinking I need a replacement.
My question now is that it is rooted with busybox, etc and I can't use an unroot program from a PC. Will a factory reset under settings (not CWM) erase all traces of root?
Sent from my SAMSUNG-SGH-I897 using Tapatalk

Soft-Bricked Galaxy S - Device Not Recognized

Hi, looking for some help with a soft-bricked SGS i9000.
It is bricked to the point that it only shows the 'Phone--!--Computer' when switched on, or when attempting to access Recovery Mode.
I can access Download mode absolutely fine, but Windows refuses to recognise the device when it is plugged in, therefore it doesn't show up in Odin, therefore I can't flash a new ROM.
Is there anything I can try to get Windows/Odin recognising it?
(Someone on another thread suggested just unplugging and replugging the phone until Windows recognises it - should I give this a try?)
Thanks.

I assume you have tried reinstalling the drivers?

Yeah, I've removed the device from device manager, reinstalled the drivers and re-plugged it.
Then I've tried updating the drivers via Device Manager - the message I get is that the best drivers are already installed.

Keys767 said:
Yeah, I've removed the device from device manager, reinstalled the drivers and re-plugged it.
Then I've tried updating the drivers via Device Manager - the message I get is that the best drivers are already installed.
Click to expand...
Click to collapse
Uninstall whatever drivers you have installed at the moment and read this thread:
http://forum.xda-developers.com/sho...an always uninstall and install Samsung Kies.

try a different usb port, sometimes you can actually fool windows with that, i have had the same a couple of times, rebooting your pc or using a other pc sometimes works...

can you enter to download mode? It should be recognised by odin. If not you need an usb jig.

I had the same thing, so i looked around and someonle suggested installinog nexus S drivers and Odin recognizes your phone!!
It really works.
Nexus S Driver Link: androiddrivers.net/samsung-android-drivers/download-nexus-s-drivers/
>>can't post links yet

[Q] Zero connectivity in download mode. £10 for solution. :)

Okay a little backstory:
I was on an early version of CM9 but as i am selling the phone i decided to put a more stable version of it on there and downloaded CM7 -stable.
I flashed this in CWM and it worked fine.
I gave it a quick test and noticed all the google apps were missing, most importantly the market. So i booted into recovery and realised i had forgotten to put the zip on the SD card.
I then went into mounts and mounted USB, nothing happened...
From that point onwards the phone would not talk to the PC. even if i booted up into the phone, it would just show it as charging. I could not find any options in the menus for USB options.
After some extensive reading, i tried a few things, none of them had worked. I found a post mentioning some kernels have issues with USB, so i downloaded the recommended one and flashed it in CWM.
After rebooting, CWM was now orange and not blue and the option to flash from external card has gone.
I have also done some digging and there is a good posibility that the kernal that i flashed was for the GT I9000 (which is the american one, right?)
So as it is at the moment:-
I can get into CWM.
I can get into download mode through the 3 button combo.
I can get into download mode using home made jig.
I can boot the phone, but it boot loops.
I can not get the phone to be detected on the pc.
Things i have checked:
Cable will connect other phones.
Tried different cable to be sure.
Phone used to be detected, but downloaded drivers through kies again to be sure.
Closed Kies using task manager.
Nothing is coming up in network connections in device manager when phone is connected.
I'm out of ideas now, so £10 PayPal donation for anyone that comes up with the solution to fix it
If i can get it detected, i can use Odin to flash what i want.

Sounds like a drivers problem. You may need the 'Google driver' developer.android.com/sdk/win-usb.html
When I had bootloops when I first installed CM9 I used heimdall to flash a the stock CM9 kernel. This gave me back CWM.
heimdall flash --kernel 'kernel.zip'
In the commandline.

Thanks for that,
I already had the Google USB drivers from when i installed the SDK to make some apps.
So i then gave Heimdall a try (Graphical Version), it seemed to suffer the same problem.
Reporting "Failed to detect compatible download-mode device."

I seem to remember the GUI saying I didn't have the correct drivers and it downloaded them for me.
The other thing worth a try is changing the USB port and reinstalling the correct drivers on that port.

I've not seen anything like that, it has not asked me for any drivers.
It's like the phone is not connected at all. nothing will detect it, i have even tried it on another PC.
Sorry, I'm not sure what you mean by installing on a port.

Well sometimes changing USB port will allow you to install new drivers. Although if you've tried it in another computer and it doesn't work then changing port may not help.
Does the phone appear in device manager when it's connected and in download mode?

Nope. Not coming up at all in the device manager. It didn't when it was booting fine. And it still doesn't in download mode. :-( I'm thinking the usb connector on the phone might be faulty.
But it was working up until trying to mount the USB in CWM
Sent from my GT-N7000 using XDA App

I don't suppose you have access to a Linux PC do you? Windows USB drivers are notoriously sucky. If you could plug it into a Linux PC and type 'lsusb' at a command line, that would at least show you that the device is really there.

I think I have a spare pc kicking around that I could use. I'll give it a go when I get home tonight.
Sent from my GT-N7000 using XDA App

Remove all the drivers completely from device manager for Samsung, then install fresh drivers and connect the cable when in download mode, hopefully it will recognize it

Are you sure the connector is clean? e.g. maybe there's dust in it.
I had that problem once, the connector was full of fabric fibers from some coat's pocket I had the phone in.

Suggestion 1 (Linux): I installed ubuntu, did not detected anything to even install any drivers. Detected my new phone fine.
Suggestion 2 (Uninstall drivers from device manager): I could not find any drivers named with the name Samsung in there.
Suggestion 3 (Clean port): I have some compressed air that i sprayed inside, it does look pretty clean and will continue to charge but still not connection on the pc.

To install the drivers for heimdall you have to run zdiag from inside the driver folder. Had to do this earlier on, the phone the other appeared as something other than Samsung composite usb or whatever it normally says

I tried this, and it displayed 9 devices after selecting show all. I seemed to recognise all of the items in the menu.
To be sure, I then disconnected the phone and re ran it to see if one of the items were missing, but it was the same number.

I too had problem with the usb connection on my i9000, and I was pretty sure my usb connector on the phone is somewhat damaged since it sometimes can only go to charging mode without being detected by my pc as a usb device. CWM instal is fine but ODIN can only detect the phone without able to flash the rom to the phone. The flashing will always stuck at the message "Setting Up Connection", I waited for 15 minutes and the flashing will eventually died. I retry the odin flash for 40 to 50 times and eventually the flashing will go through one time. Tried heidmall command line and the result is the same.

I have problem with Odin in the past. I bought a new laptop, running Win7 64 bit. Installed Samsung Kies to install the correct USB drivers for the phone. Then made sure that Kies wasn't running in the background. So tried using Odin. Odin was detecting the phone, but it was hanging at initialising connection. Odin was working fine on my old laptop running Win7 32bit. Long story short, I was having a few issues with my new laptop, reinstalled Win7 64bit, now Odin is working fine, have flashed the phone a few times using the new computer.

After flashing which kernel you started facing this problem?
Wipe ur phone,re-flash CM7(flash the nightly 181,it's completely stable),uninstall KIES,uninstall old usb drivers,install these usb drivers http://forum.xda-developers.com/showthread.php?t=961956 ,check that USB storage mode is set as Mass Storage and then connect your phone. Also try enabling/disabling USB debugging

lovedonator said:
After flashing which kernel you started facing this problem?
Wipe ur phone,re-flash CM7(flash the nightly 181,it's completely stable),uninstall KIES,uninstall old usb drivers,install these usb drivers http://forum.xda-developers.com/showthread.php?t=961956 ,check that USB storage mode is set as Mass Storage and then connect your phone. Also try enabling/disabling USB debugging
Click to expand...
Click to collapse
The point at which i could no longer mount the USB was when i selected "mount usb" from CWM. I later installed a new kernal which downgraded my CWM, removing the install from external SD option.
So I cant flash a re-flash a rom unless i can it onto the phone which without the USB working is near impossible.

Xyis said:
The point at which i could no longer mount the USB was when i selected "mount usb" from CWM. I later installed a new kernal which downgraded my CWM, removing the install from external SD option.
So I cant flash a re-flash a rom unless i can it onto the phone which without the USB working is near impossible.
Click to expand...
Click to collapse
You can directly download the ROM on your internal sd using dolphin browser or opera mobile

I can't do that either as the phone is currently boot looping.
Sent from my GT-N7000 using XDA App