itunes is not detecting Iphone 3g after ios updated to 4.1

[dshar]

I updated my iphone os to 4.1. After updation my iphone is detected by windows vista laptop (under portable devices, Apple iphone is there), but is not recognizes by itunes version 10.1.1.4. No detection, no sync. I did itunes reinstall 2-3 times, reset,restarted Iphone but the issue persists. Other iphone 3GS is working fine in my laptop and iTunes is detecting it.

Following is the iTunes Diagnostics result:

Microsoft Windows Vista Business Edition Service Pack 1 (Build 6001)
Hewlett-Packard HP Pavilion dv4 Notebook PC
iTunes 10.1.1.4
QuickTime 7.6.9
FairPlay 1.10.14
Apple Application Support 1.4.1
iPod Updater Library 10.0d2
CD Driver 2.2.0.1
CD Driver DLL 2.1.1.1
Apple Mobile Device 3.3.0.69
Apple Mobile Device Driver 1.52.0.0
Bonjour 2.0.4.0 (214.3)
Gracenote SDK 1.8.2.457
Gracenote MusicID 1.8.2.89
Gracenote Submit 1.8.2.123
Gracenote DSP 1.8.2.34

iTunes Serial Number 54CF1D6D8B2C4FF8

Current user is not an administrator.
The current local date and time is 2011-01-26 18:44:33.
iTunes is not running in safe mode.
WebKit accelerated compositing is enabled.
HDCP is not supported.
Core Media is supported.

Video Display Information

Intel Corporation, Mobile Intel(R) 4 Series Express Chipset Family
Intel Corporation, Mobile Intel(R) 4 Series Express Chipset Family


**** External Plug-ins Information ****

No external plug-ins installed.

**** Device Connectivity Tests ****

iPodService 10.1.1.4 is currently running.
iTunesHelper 10.1.1.4 is currently running.
Apple Mobile Device service 3.3.0.0 is currently running.

Universal Serial Bus Controllers:

Intel(R) ICH9 Family USB Universal Host Controller - 2934. Device is working properly.
Intel(R) ICH9 Family USB Universal Host Controller - 2935. Device is working properly.
Intel(R) ICH9 Family USB Universal Host Controller - 2936. Device is working properly.
Intel(R) ICH9 Family USB Universal Host Controller - 2937. Device is working properly.
Intel(R) ICH9 Family USB Universal Host Controller - 2938. Device is working properly.
Intel(R) ICH9 Family USB Universal Host Controller - 2939. Device is working properly.
Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293A. Device is working properly.
Intel(R) ICH9 Family USB2 Enhanced Host Controller - 293C. Device is working properly.

No FireWire (IEEE 1394) Host Controller found.

Connected Device Information:

iPhone, iPhone 3G running firmware version 4.1
Serial Number: 5K0259CTY7H

Most Recent Devices Not Currently Connected:

iPod shuffle (3rd Generation) running firmware version 1.1
Serial Number: 5C914BE1891

iPhone 3GS running firmware version 4.1
Serial Number: 86022XE43NP

**** Device Sync Tests ****

One or more sync tests failed.

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[tridhos]

When this happened to me I was advised to go to system properties in Device Manager and update the driver which worked for me.