Anyone solved the: "USB Device Not Recognized - Code 43" problem ? - Galaxy S II Q&A, Help & Troubleshooting

I've searched the entire net for a solution for this problem, to no avail. There seems to be a confussion of whether this is a hardware or software problem (since the only person who fixed this, did it by replacing the phone!).
This is the problem:
- Every time I connect the sgs2 through USB to my computer (windows 7), it gives this error (USB Device Not recognized). I have the latest kies installed on my computer.
- The USB did work ok when I first got the phone.
- I'm on stock ROM, and the only thing I did was install CWM and do Root (back when the USB was recognized).
- If it is a hardware problem, how come I can still charge the phone through the same USB port ?
- It's not cable related nor computer related (tried different cables and computers)
- Did hard reset, still the same problem.
Update:
Out of desperation I tried to connect the Galaxy s2 to every USB port on my computer. In one of them it suddenly worked and kies synchronized perfectly. But then when I disconnected and connected it again to the same USB port, the same problem happens (USB Device Not Recognized). What the hell is this ??

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Its a USB driver problem usually with PC .
Connect phone to a mainboard USB port in mass storage mode with KIES not running . Wait for windows to find drivers .
or settings on phone wrong
USB Debugging OFF Phone set to USB mass storage mode then connect cable .
jje

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JJEgan said:
Its a USB driver problem usually with PC .
Connect phone to a mainboard USB port in mass storage mode with KIES not running . Wait for windows to find drivers .
or settings on phone wrong
USB Debugging OFF Phone set to USB mass storage mode then connect cable .
jje
Click to expand...
Click to collapse
Thank you very much for your help JJEgan.
Here is what I tried to do:
1. Removed Kies completely from computer.
2. Removed Samasung USB driver for mobile phone.
3. Restart the computer.
4. Tried to connect the phone as mass storage (either through enabling debug mode, or through the mass storage option inside "wirless and networks"). The connection was to a USB socket directly in the motherboard.
Nothing works.
No matter what I do, everytime I try to connect the phone to USB, I get the following alerts:
{
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"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
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have you tried turning usb debugging off and on? i recently started having an issue with windows xp not recognizing my device. the issue started after flashing the latest version of ninphetamine kernel. i solved it by restarting both my pc and phone, then reconnecting, but i also read that if you turn usb debugging off and on it will fix it.

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Thanks hondaguy, but what you suggest didn't help.
I'm starting to understand that this is a hardware problem. Probably a defective USB port on the Galaxy S2.

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for samsung jet gt s8000 i had the same problem i was pulling my hair out for a while but then found some useful info from a site i cant remember...
BTW dunno if this is true for sg2 but theres two types of usb connection going on, qualcomm and samsung.
try these codes maybe work maybe not?
quallcomm usb drive *#782872#
samsung usb drive *#7426872#
key either in ur dialer and then plug usb..

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Samsung Galaxy S2 - USB Device not recognized.
Hi Noam23,
Were you able to solve the issue. I am having the same with my Phone. I tried the same steps that you did... Do you think its an issue with the usb port on the phone.
I got the Samsung galaxy s2 and am using windows 7 64bit.
Thanks in advance...

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Have the same problem here :-/

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Yeah same problem here, started a week or so ago.
USB debugging, different cable, different ports, none of them recognising it.
Kies on the phone reckons it's connected, Kies on the laptop doesn't see that there's a device connected. When you exit Kies on the phone I get the USB not recognised message as per the above and the same code 43 message.
Wifi File Explorer at least allows me to get files on and off the phone without using usb but it would be really great to get 3G tethering back!!

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after trying 3 different usb cable and different computer and laptop i use tooth brush to clean usb pin on phone and that solved the problem.

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For most of you its driver problems..
Uninstall the drivers on your computers, and connect your phone again. It should then prompt to install the drivers..
Also only connect your phone without the memory card, see what happens.

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Tooth Brush Saved My Life
Hey.. Thanks cassiapark, the toothbrush thing worked for me too.. It seems that a few of these tiny threads from my jeans had gone into the port.... Thanks..

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Thanks for the pointers folks. Tried them all but no joy yet. A friend pointed out the portable hot spot functionality which at least allows me to tether. Any other ideas gratefully received!

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It's not a lost cause - just once it's recognised the phone and loaded the drivers and it worked, briefly. Now back to not connecting unfortunately. Still, good to know it's not dead!

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cassiapark said:
after trying 3 different usb cable and different computer and laptop i use tooth brush to clean usb pin on phone and that solved the problem.
Click to expand...
Click to collapse
Genius! Can't believe after everything that I tried that all I needed to do was clean the bloody thing. Thank you soooo much.

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Solved!
OMG!!!
12 hours of intense work and research, 3 different cables, 7 pc, 1 mac with no results.
How did I did it?
The TOOTH BRUSH DID THE TRICK!!! Cleaned up the the USB pin on the phone and that solved the problem. Just make sure that the tooth brush is absolutely dry.
It seems that the conector are too small, so any thing, by little there is can block the pins.
Thank you guys!

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having the same problem but the tooth brush didn't do the trick. How do you clean it exactly?

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so yea... i was flashing a rom. and it went into a bootloop. so i hooked up to load a stock rom threw odin3. Mid way threw my connection decided it wanted to cut out and now my phone boots and says "firmware upgrade encountered an error." I can still get into the download mode but when i plug it into my computer it either doesnt respond or says can not install driver and names it gadget serial. tried the tooth brush.... battery died.... and now im waiting for it to charge....

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Use tooth brush to clean Samsung Galaxy 2 usb and that solved the problem
cassiapark said:
after trying 3 different usb cable and different computer and laptop i use tooth brush to clean usb pin on phone and that solved the problem.
Click to expand...
Click to collapse
Great thanks cassiapark!!! I went mad on this problem but your solution solved it completely.
Greeting, Henny

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Same problem here
cassiapark said:
after trying 3 different usb cable and different computer and laptop i use tooth brush to clean usb pin on phone and that solved the problem.
Click to expand...
Click to collapse
Have tried all of these solutions, plus toothbrush, blowing into the phone port and the cord connector, have spent 3 hours trying to solve the issue with a Samsung live chat...nothing. Just a minute ago, I plugged in my phone to the PC, it correctly installed the drivers, Kies recognized the connection, and it starting updating my firmware!!! And then it crapped out and the PC said device not recognized, and Kies didn't recognize the device connection once again...
Anyone???