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this is my problem,
when i connect my hd2 it charges but the computer doesn't recognize it. on the phone settings it is set to active sync. i also have 2 computers; xp and vista, both do the same thing.
i could careless about active sync, i just want to plug my phone into my pc and transfer files in and out. ive also tried the disk drive option but still no go?
if i enter bootloader and plug it in it recognizes the usb setting but when the phone is normal, it doesn't??
it did this with the stock rom and its also doing this with nrg titanium rom.
any help would be appreciated
Same thing here.
It charges through USB but it doesnt connect.
If i choose the storage option it works fine.
I want to sync my outlook and i cant...
What the heck...?
i know this may seem a bit "it helpdesk-ish" but try re-booting your PC
Come on... give something drastic!
Already done that, rebooted the pc and the hd2...
still nothing
djchubbs said:
i know this may seem a bit "it helpdesk-ish" but try re-booting your PC
Click to expand...
Click to collapse
believe it or not i have done that mannyy times and did alot of device manager things to try and let both computers recognize the hd2 but still nothing haha..
ive had previous hd2's and they've all connected fine untill this one, maybe its this specific one thats giving me trouble. but regardless, it charges via usb then it should be able to recognize it
Check the active sync settings to ensure that usb connections are enabled. You can tell be looking at the system tray icon - there's a read circle with a white X in it if USB is disabled.
Saying that though, if it doesn't even recognise it when the device is in USB mode, I'd try a different cable. It's perfectly reasonable that the cable could power the device but not fully facilitate a USB connection.
johncmolyneux said:
Check the active sync settings to ensure that usb connections are enabled. You can tell be looking at the system tray icon - there's a read circle with a white X in it if USB is disabled.
Saying that though, if it doesn't even recognise it when the device is in USB mode, I'd try a different cable. It's perfectly reasonable that the cable could power the device but not fully facilitate a USB connection.
Click to expand...
Click to collapse
but the thing is when i go into bootloader it recognizes it as usb and i can add customs roms and such. just not when the phone is normal weird ?
k20a1 said:
but the thing is when i go into bootloader it recognizes it as usb and i can add customs roms and such. just not when the phone is normal weird ?
Click to expand...
Click to collapse
That is very weird. Sorry mate - never heard of it doing that for anyone before.
Make sure you have the mobility center/active sync program installed on your computer. Without it it won't work.
On Vista or Seven, with the HD2 plugged in, you can find the program/drivers by launching and refreshing manually Windows Update. On XP you have to do that manually.
Good luck.
This happens to me often. In my case I have found it to be a weird driver issue. Go to device manager and look for the yellow triangle. Right click and update driver software. This worked for me I hope it helps.
bit late but just flashed maxsence and i love the look, but have allready had to restart by phone 10 times in 10 minutes. I'll wait for the next release. back to GTX for now.
Good work NRG. keep it up.
this is one of the many WM6.5 errors!
need Android soon!
Ok here we go.
The phone did not connect through activesync to my pc. When i selected to connect as mass storage it connected.
I checked for driver issues in device manager but nothing came up.
I checked the hd2's activesync. Bingo! the activesync was crashing when i was running it. I had to hard reset the phone.
Now it works fine.
My guess is that maybe a program that i installed recently was buggy and created this particular problem. Unfortunately i have about 50+ programs installed (including themes etc) and i m not sure which one it was.
I was installing all the programs again today one by one and after the install process was completed i connected the hd2 to usb to find which app was the problematic one.
After installing almost(some were found useless) all of the apps (here is the crazy part) the hd2 still was connecting through activesync....
HTC will drive me nuts...
Anyway the phone now connects correctly.
I cant understand which was the problem....
as odd as it may sound i think i figured it out.
i think its the usb cable that im using, i have to wiggle it around for it to connect to active sync but once it connects its not a stable connection as it cuts in and out.
but charging capabilities work though!
pos wire, i ordered a new wire and if that one fails also, i will have to get my hd2 replaced for faulty usb port
thanks for all the replies much appreciated
@k20a1
Try to hard reset the phone.
It worked for me.
If not again, then use your warranty!
angelossssss said:
@k20a1
Try to hard reset the phone.
It worked for me.
If not again, then use your warranty!
Click to expand...
Click to collapse
i did whenever i custom rom'd it, it still does the same thing. yes it will connect via usb while in bootloader but will not during regular phone operations lol
"Disk drive" mode not working with XP laptop
HD2 is working fine with my desktop, but wit laptop I can only use ActiveSync to browse files.
When I connect the USB cable I get:
"Found new hardware wizard"
but it tells me that it Cannot Install This Harware - Disk Drive
"An error occurred during the installation of the devie The system cannot find the file specified"
And I only have "Finish" to click - if I click it the wizard lunces again immediately and goes on and on with no end.
HD"/Leo does not appare in Disk Manager (I know ablut the drive lettering issue)
I'm sure its my XP issue, but I havent found drivers to fix that, and I'm not about to reinstall XP on my lappy in near future.
Transfer files - Solved
;
k20a1 said:
this is my problem,
when i connect my hd2 it charges but the computer doesn't recognize it. on the phone settings it is set to active sync. i also have 2 computers; xp and vista, both do the same thing.
i could careless about active sync, i just want to plug my phone into my pc and transfer files in and out. ive also tried the disk drive option but still no go?
if i enter bootloader and plug it in it recognizes the usb setting but when the phone is normal, it doesn't??
it did this with the stock rom and its also doing this with nrg titanium rom.
any help would be appreciated
Click to expand...
Click to collapse
I share the same here and I was despaired of trying to solve it with any logical, as well with illogical, measures. Such as: rebooting, changing usb cables, reinstalling activesync 4.5, etc.....etc...blla..blla...blla...
However, I solved the "Transfer files issue" by taking out the sd card from the HD2 and connect it with an external cards reader to my pc.
The card reader connected and works with the same usb cable that does not work with the HD2.
That way I load it with all files and in the same occasion I reload into my computer the daily spb backup files.
However, I have the feeling that the reason for that problem is a missing file/driver named: "Setup1.SPL" in the pc windows operating system.
In order to solve that it seems that only reinstalling windows on my pc will be the solution which defiantly do not like.
It seems like a craps shoot for me if windows will recognize it... hell sometimes my notification bar tells me usb is connected but doesn't give me options to turn it on or off... and this is all with USB set to mass storage... is there possibly something I am doing wrong?
Like sometimes it hooks up without any issues, other times windows sees it, but after a few minutes says its failed to install a MTP USB device, so I have tried pointing it at the location where the sammy USB drivers were installed but nothing... I have tried uninstalling/reinstalling the drivers and manually switching them to other random things...
sometimes a reboot of the comp works it out, but other times it doesn't... I have the feeling I am just missing something...
Same here, except i'm on WinXp SP3. Get USB connected icon in notification bar of Vibrant, but windows task tray says failed to install device.
Looks like iffy drivers to me. Since samsung apps isn't available in the US yet, is there somewhere else we can get Kies?
The file you want for Windows 7 x64 is called GalaxyS_64.zip - worked perfect for me. Can't remember where I downloaded it from, though... uploading it now.
Edit: Here's the file you want.
http://www.filedropper.com/galaxys64_2
gordon.mott said:
The file you want for Windows 7 x64 is called GalaxyS_64.zip - worked perfect for me. Can't remember where I downloaded it from, though... uploading it now.
Edit: Here's the file you want.
http://www.filedropper.com/galaxys64_2
Click to expand...
Click to collapse
That's the same thing I have tried installing a few dozen times before... still won't work.
There are multiple notifications you have to deal with on the phone. Took me a while to figure it out, too.
First you have to pick the mode you connect to W64 in (Mass Storage), then you actually have to mount the internal memory and card as drives for W64 to see them. This is all in the Notification bar on your phone. Just because you see the USB icon does NOT mean you are supposed to be connected.
THEN you get the "What do you want to do with this?" from Windows.
I got so tired of all the confirmations I just installed Dropbox. Now if I want a file on the phone I just drop it into my Phone Stuff directory and pick it up on my phone. No USB cable, no WiFi, just grab it and go.
If you're looking to xfer over a big batch of media files there is DoubleTwist and several other apps like it that will do so over WiFi.
Col.Kernel said:
There are multiple notifications you have to deal with on the phone. Took me a while to figure it out, too.
First you have to pick the mode you connect to W64 in (Mass Storage), then you actually have to mount the internal memory and card as drives for W64 to see them. This is all in the Notification bar on your phone. Just because you see the USB icon does NOT mean you are supposed to be connected.
THEN you get the "What do you want to do with this?" from Windows.
I got so tired of all the confirmations I just installed Dropbox. Now if I want a file on the phone I just drop it into my Phone Stuff directory and pick it up on my phone. No USB cable, no WiFi, just grab it and go.
If you're looking to xfer over a big batch of media files there is DoubleTwist and several other apps like it that will do so over WiFi.
Click to expand...
Click to collapse
Well I am installing dropbox because this is getting ridiculous... after a fresh flash it mounted once, then after that it wouldn't ever again. I tell it to mount to my computer and everything, but the computer just shows an icon that it is trying to install the drivers and never does... Come on samsung, stop being so proprietary...
Wow guys I didn't have any problems at all. USB Mass Storage worked the first time and it keeps working. Where I encounter problems is when I set it to USB Debugging then it doesn't get recognized.
ETA: I'm on Windows 7 x64 with all the current updates.
My windows is 32bit XP, but try this trick i've discovered, may be it will help. Say into voice dialer "Open SD card" -> check "Enable USB mass storage". Let's know how it works
Hey Degeneration, you can also install the Android SDK.
Unfortunately I can't post external links until I'm validated by a mod, but if you google "screenshot vibrant" (w/o the quotes) it should be the top link.
The domain is know your cell dot com and it has links to the Android SDK and the Java SE SDK in the instructions to take screenshots of your Vibrant.
I personally think you should try this because your phone may be defective. I'm running W7-64 Pro and didn't have to do anything to get the phone and the PC to see each other.
Wow I had no idea people were having this issue. I'm running Win 7 Ult. x64 and for me it was just plug in and go. When I was rooted on my G1 I had a similar issue but using USB Debug and the Android SDK fixed that. hope you get it figured out.
Yeah I'm on win7 and I installed the drivers and plugged in the phone and was good to go
Sent from my Samsung Vibrant using XDA App
I installed the drivers before ever plugging the phone in. I also have had SDK, adb, and Odin3 ready before plugging it in. When I first got it I immediateness set it to mass storage and didn't have a problem. Then when I started messing with it more I started having trouble every once in a while with it mounting, to the point that now it works every once in a while, mostly right after a fresh flash. Personally I think it's a combo of both the phone and the computer doing crap, but it's pretty lame. I don't even remember installing drivers for my G1, and definitely nothing else and I never had an issue with it. I don't see why samsung can't kiss a little butt or pay a little money to have windows recognize the phone and be able to install the drivers from the net. Now if the problem was just for people messing with their phones it would be one thing, then it's on me. But last night I was running stock again and it only worked the first time it connected, but I forgot to switch to mass media so I disconnected, switched, reconnected, and nothing. Tried switching back and same thing...
Constantly just keep getting told at best that windows failed to install an MTP (or whatever, I just closed the thing in the notification area and when I tried reconnecting the USB cable I got the phone just telling me USB is connected but giving no options) device failed to install...
bah... oh well
I am having a huge problem mounting my Epic 4G to my Mac. When I select Mount USB, nothing happens. I have read several posts about Galaxy S phones having the same problem, they all say to have USB Debugging turned on, but mine is on and still can't mount.
Also, another huge problem. I connect my phone, then I use adb to access the sd card, but I can only use adb for a short period of time, then it disconnects itself, then I try to run adb again but it does not recognize it. I have to unplug the phone, then plug it again.
Does anybody have any idea why this is happening or how to fix it?
Note: I can do everything perfectly fine with my Sprint Hero
Thanks
JGeZau said:
I am having a huge problem mounting my Epic 4G to my Mac. When I select Mount USB, nothing happens. I have read several posts about Galaxy S phones having the same problem, they all say to have USB Debugging turned on, but mine is on and still can't mount.
Also, another huge problem. I connect my phone, then I use adb to access the sd card, but I can only use adb for a short period of time, then it disconnects itself, then I try to run adb again but it does not recognize it. I have to unplug the phone, then plug it again.
Does anybody have any idea why this is happening or how to fix it?
Note: I can do everything perfectly fine with my Sprint Hero
Thanks
Click to expand...
Click to collapse
I've successfully mounted my SD card on OSX. I have debugging turned off. If it won't mount, try a different slot, if that doesn't work, try rebooting the phone. It will work.
JGeZau said:
I am having a huge problem mounting my Epic 4G to my Mac. When I select Mount USB, nothing happens. I have read several posts about Galaxy S phones having the same problem, they all say to have USB Debugging turned on, but mine is on and still can't mount.
Also, another huge problem. I connect my phone, then I use adb to access the sd card, but I can only use adb for a short period of time, then it disconnects itself, then I try to run adb again but it does not recognize it. I have to unplug the phone, then plug it again.
Does anybody have any idea why this is happening or how to fix it?
Note: I can do everything perfectly fine with my Sprint Hero
Thanks
Click to expand...
Click to collapse
Dude, welcome to the club. Since i got my phone i have not successfully been able to have it read on my Mac Mini. Tried different cables and different ports. Some say get a powered USB hub but i'm not in the mood to clutter my puny desk space.
For now i use an app called Websharing to transfer stuff via WiFi. It's a pain sometimes but that's how i get by for now.
I don't have any problem with 10.5 or .6
I can use either regular or debug. Sometimes rebooting the phone and/or the computer helps. It could be a crappy cable. I don't think the supplied one is very good. The one I use with no problems is the overpriced 3 footer that the corporate sprint stores have. I think the cables that came with the epic, moment, and evo were el cheapo. I had a problem that you are describing with a stock supplied cable. I figured out that the micro usb end wasn't making solid contact with the phone. If I would move the cable, it would disconnect. Changing to a real micro usb cable helped me. It could be the usb port is flaky or the usb plug is intermittent. If you are using vmware fusion or bootcamp or dual boot, see if it drops connection in a different os.
No luck under Windows7 (running with Parallels Desktop) either. I'll try buying a new USB cable and see if that works ... Will try Websharing too.
Thanks
I am able to see and access the SD card at work after installing Samsumg USB Drivers under Windows XP, however I am not able to use adb to access the phone ... ahh, this is driving me crazy, I need to root the phone and install a custom rom ... >_<
JGeZau said:
I am able to see and access the SD card at work after installing Samsumg USB Drivers under Windows XP, however I am not able to use adb to access the phone ... ahh, this is driving me crazy, I need to root the phone and install a custom rom ... >_<
Click to expand...
Click to collapse
Did you put your phone into debug mode?
I found that trying different USB slots on the PC, it will eventually work. When you plug it in the first time, it will install some needed drivers ABD etc, if you unplug the phone and plug it back into the same USB slot, it will install the last remaining drivers and you should now be able to see the phone.
Samsungs drivers are flaky at best. It took me a good hour to get it working for me so I could root my phone.
blazinazn said:
Did you put your phone into debug mode?
I found that trying different USB slots on the PC, it will eventually work. When you plug it in the first time, it will install some needed drivers ABD etc, if you unplug the phone and plug it back into the same USB slot, it will install the last remaining drivers and you should now be able to see the phone.
Samsungs drivers are flaky at best. It took me a good hour to get it working for me so I could root my phone.
Click to expand...
Click to collapse
That worked, turning on USB debugging and switching to another USB slot. But, this is at work under WinXP. Now I need to make it work under OSX at home.
I'll try Ubuntu when I get home and see if that works...
Thanks
JGeZau said:
That worked, turning on USB debugging and switching to another USB slot. But, this is at work under WinXP. Now I need to make it work under OSX at home.
I'll try Ubuntu when I get home and see if that works...
Thanks
Click to expand...
Click to collapse
I know some people successfully installed Clockwork via Mac but I haven't seen anything about root. Instructions might be the same, files are obviously different, maybe it'll help you:
http://forum.xda-developers.com/showpost.php?p=8163186&postcount=87
I still can't conect to my Mac. Already bought a new cable and did everything I could...I'm getting mad
Sent from my SPH-D700 using Tapatalk
help me too please!!!
i my self having the same issues but on my windows xp desktop computer i never had this problem with a droid i always just plug it in the usb an my sd card pop up on the screen but on this epic 4g my god it doesn't make a sound on the computer or show any thing all it do is charging my phone i even mount it like i always on my droid can some one please tell me whats the issue i have alot of apk files i want to put in my sd card i need to get set cpu up an running an other roms on my epic 4g thanks for looking help.
temporary fix
This topic has been discussed at another tread.... but anyway, The Macs (current generation only) do not give you enough energy at the USB to power the phone into connecting the memory card. Nor even enough to recognize the phone for more than a few seconds. You can get around it, temporarily, by connecting through a powered USB port. Tetheris still doen's work, but at least you can mount your sd card. It's a software issue... if you're running Windows on the mac machine, it'll connect and mount fine. So, ask Mac for a fix.
Wellington Amaral said:
This topic has been discussed at another tread.... but anyway, The Macs (current generation only) do not give you enough energy at the USB to power the phone into connecting the memory card. Nor even enough to recognize the phone for more than a few seconds. You can get around it, temporarily, by connecting through a powered USB port. Tetheris still doen's work, but at least you can mount your sd card. It's a software issue... if you're running Windows on the mac machine, it'll connect and mount fine. So, ask Mac for a fix.
Click to expand...
Click to collapse
Yes..thanks. That did it for me. The only thing I hadn't tried was plugging it into my powered usb hub...boom it works.
Worked for me too... can't f'in believe it.
Argh, I am pulling my hair out trying to solve this! When I connect my phone through USB to my computer my phone detects the connection but my computer doesn't respond at all! I bought the phone used and it is already rooted but is using a pretty old rom and I wanted to upgrade it. It is currently running "Kernel version: 2.6.32.9 [email protected] #4".
Things I have tried:
Using different USB settings on the phone (Kies, mass storage, ask on connection)
USB debugging mode
Different USB cables
Different computers
Cleaning the micro usb port on the phone
Formatting SD card
wide data/factory reset
Nothing seems to accomplish anything, it still reacts in the same way.
Any help would be greatly appreciated!
The ROM shouldn't count.
First of all, has it ever worked? I just presume you're running on win7: did you installed the drivers as specified in several different tutorials on this forum?
What kind of connection are you trying to establish? tether, usb, kies, other? have you tried any combination possible?
I just got the phone a couple days ago, I have not managed to get it to be detected by anything yet. I have tried it on a couple Win 7 boxes and also a Vista laptop. I am currently downloading Ubuntu just to rule out the OS factor. I have just been using Kies to install drivers although after reading your post I found this thread:
http://forum.xda-developers.com/showthread.php?t=961956
I'll try that and post results if that is what you mean? I have been trying to establish basically any connection at all for the ultimate goal of getting Odin to actually detect the phone so I can flash it with ClockworkMod Recovery and then an ICS rom. The phone detects the USB cable fine and starts charging and puts the phone into whatever mode I want (kies, mass storage, etc.) but the computer has yet to give any indication that anything is connected to it.
Try with the drivers, but be also sure to enable usb debugging to be able to select a different usb sharing when inserting the cable in case you haven't already.
The drivers installation didn't make any difference and I've tried USB debugging and all 3 connection modes (Kies, mass storage and media player), none of which exhibit any response from the PC.
Edit: Posting from Ubuntu now, same exact thing. Phone detects USB connection, and it doesn't matter which of the connection options I choose as the PC doesn't give any indication that anything has been connected to it.
That's really weird. Does Odin3 (which presumably works at a lower level) sees anything if you put the phone in download mode? ) this way you should be probably able to upgrade somehow.
Sent from my galaxys using XDA App
No unfortunately there is no response from the computer or Odin3 when the phone is in download mode and connected through USB.
that's odd and maybe that's not good at all.
I'm starting to think the problem could be hardware related, especially in a situation where odin can't see the phone in download mode (i.e. no software layer is interfering).
Is there any glaring damage/scratch/missing parts on the usb port?
Sincerely, if I could return it I would try that at this point.
Unless someone else has got anything else to try.
I'll take a good look at it under a scope when I go to work on Monday I guess. Thanks for your input, I'll try to update if I find out anything else!
So I took a look at the port under a scope today and discovered that one of the pins (the middle one) in the micro usb port on the phone seems to be completely gone! Not sure what each pin does but I'm assuming that one is probably used to communicate to whatever the phone is connected to...
Luckily I have access to a parts phone that I can take apart for a replacement port so probably tomorrow I will attempt surgery on the phone! Will report back with further progress after I have done so.
Well I'm happy to report that that was definitely the problem! I replaced the micro USB port on the phone today during my lunch break, put the phone back together and plugged it into a PC here. It immediately detected the phone so I'm pretty happy! Guess I'll be trying out some ICS roms tonight when I get home!
that's great, glad you managed you fix this yourself, well done and enjoy your SGS
Hi,
I'm having a real though time trying to connect my galaxy s1 to a pc. Have tried everything, like kies, direct connection, reseted the device, and no joy.
When I plug the cable it makes that sound as it is connecting but it doesn't show in the PC anywhere, nor even in Device manager.
It can get pwr from the usb cable when is connected; already tried with another cable and same thing.
My final goal is to unlock it.
thanks for any help
have you tried put yoy're phone in depurating mode?
I guess yo mean Debugging mode, as I couldn't found Depurating anywhere. Have selected it and the same effect
HI
I had the same problem after getting nowhere with it, for some reason and I don"t know why, I put it in download mode and then connected it to odin and my PC found it I then disconected it and its been fine eversince.
Jim
#Samsung Kies always makes problems on Windows x64 !
##I would recommend, if you got 32-Bit Computer, to use that ;-)
#If you Want just flash over Odin, then is this driver package enough
##[Link]--http://download2us.softpedia.com/dl/85b009d47a0940e89eee2297a531d100/4f577870/300141878/drivers/mobile/SAMSUNG_USB_Driver_for_Mobile_Phones_1.4.8.0.exe
#The Package is also enough for If you want just to connect to mass Storage (Phone's SD Card)
Don't Forget to Thanks, if it was useful for you!
_______________________________________________
Hi there.
By direct connection you mean the USB Mass Storage mode, right?
It might be some weird, random problem with the samsung system drivers. I used to have such problems about two years ago, back in the days of Froyo. Have you tried re-installing them? There was a link to proper drivers file in one ICS installation tutorial, and those drivers can be downloaded here. If you go about trying this method, lemme know if it worked.
Cheers.
PS: Unlike diklooc there suggested, do not never EVER go back to x86 OS. That's the worst advice. Kapisch?
Did you check your usb port in System ?
Sometimes it stuck with another lastest device
Hi,
have tried everything, and finally only in a WinXP32 could be abble to get the error shown on the file atached.
But nothing (warnings) come up in Device Manager
Unninstalled everything (kies) and tried to install only the driver and nothing happens.
Should I try to mount it on a linux?
or is it dead?
thanks
i have this problem too
wat chan I do???
my sgs can not connect to my PC
This may help...
Hi there - I don't have the same phone as you, but I did encounter the exact same problem. I've been searching around and it looks like the most common fix was to simply replace the cable. I don't know what kind of cable you have, but my phone (a Samsung Focus i917) uses a mini-usb connector. I found that my Amazon Kindle used the same connector.
When I was using the Samsung cable, I'd get intermittent connects and charge power. The OS would report unknown device. When I switched computer's = same result. I switched to my Kindle cable and the computer instantly recognized the device and installed the drivers. After 12 hours of troubleshooting, factory resetting my phone (blah - lost everything) it turned out to be the cable. I know that this isn't an easy troubleshooting step for most people, because who has an extra cable? I just got lucky that my Kindle uses the same connector. I'm now suspecting (due to the prevalence of this connectivity problem coming from people with Samsung phones - there are a LOT of reported issues) that there is probably a Samsung cable problem in general.
Good luck with your phone.
try
try select mass strong ...
Tips and unlock advice.
nasdriver said:
Hi,
I'm having a real though time trying to connect my galaxy s1 to a pc. Have tried everything, like kies, direct connection, reseted the device, and no joy.
When I plug the cable it makes that sound as it is connecting but it doesn't show in the PC anywhere, nor even in Device manager.
It can get pwr from the usb cable when is connected; already tried with another cable and same thing.
My final goal is to unlock it.
thanks for any help
Click to expand...
Click to collapse
Nasdriver, I currently have a similar problem but mine is related with Samsung Kies as I can't get either my older SGS1 or my newer Samsung Nexus to get recognized by Kies. I also suspected the cable thing and even read it could be a USB port issue but neither of them was my problem (I have 3 cables and 8 ports on 2 computers that result in the same thing). I can connect other devices with the same cables and they work, so I suspect my problem is focused around the Samsung device drivers.
My advice is if you can go in a systematic manner, first focus on the cable (easiest to replace), if you get the same results with a new cable, then focus on the USB physical port, clean it with some Isopropyl alcohol, if the port works for other devices (camera, other phones, etc..) on the same cable but not with the SGS, then try reinstalling the samsung device drivers.
Oh, and if you want to unlock your phone, the EASY way is to download the Galaxy S Unlock application from the Android market (no affiliation) it's free (but the developer does accept donations) and it WORKS. I won't bore you with my 3 week journey trying to unlock my Bell SGS phone here in Canada, had I found this app first I would have done it in less then 2 min saved myself a LOT of frustration.
Good luck