GSM Shop

Welcome to the GSM-Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.
Only registered members may post questions, contact other members or search our database of over 8 million posts.

Registration is fast, simple and absolutely free so please - Click to REGISTER!

If you have any problems with the registration process or your account login, please contact contact us .

Go Back   GSM-Forum > Non GSM/Mobile Related Forums > Bluetooth > Bluetooth-Hardware

LinkBack Thread Tools Display Modes
Old 03-19-2009, 12:33   #1 (permalink)
Junior Member
Join Date: Mar 2009
Posts: 1
Member: 995682
Status: Offline
Thanks Meter: 5
Widcomm bluetooth driver and device not recognized after SP2 and SP3 - Solution

After many years of attempts I finally got it right. I own an Acer Ferrari 3000 since 2005. It ships with XP home edition - pre SP2. It comes with a built in Bluetooth device (not a pluggable USB) and uses a Widcomm driver. As soon as SP2 was installed (auto-update) the bluetooth device was not identified by windows and the blue led indicator stopped blinking. The device was not recognized by windows and did not appear in the hardware or driver manager.

I followed many threads - only a few were aiding me but none helped. The problem, to summarize, is that SP2 provides windows with a list of generic bluetooth drivers. The original Widcomm driver is not signed or authorized or recognized as official (whatever...) by Windows and Microsoft. SP2 installs system information files in the %WINDIR%\inf (typically C:\Windows\inf) directory, which are then compiled into binary (.PNF) files which tell windows which drivers to load. Widcomm is not one of them.

Once SP2 installed the bth.inf and related bthXXX.inf files under this folder, and the system was rebooted, this information (I am guessing here) is loaded to the registry and is virtually impossible to revert without tampering with the OS functioning properly. (Don't try it, take my word for it, unless you'd like to spend days of recovering and re-installations). My solution is to reinstall SP2, but prior to re-booting, rename all the bthXXX.inf files to bth.inf.old.

  1. If you have service pack 2 installed already - uninstall it!
  2. Make sure your Bluetooth device and driver work properly before SP2 installation. No use of blaming SP2 if your Bluetooth devices do not work without it.
  3. Re-install SP2 (you can do this with Windows update)
  4. Very important!!! When the installation completes, before reboot, goto C:\Windows\inf and rename each bthXXX.inf file (such as bth.inf, bthpan.inf, bthprint.inf and etc...) to bth.inf.old, bthpan.inf.old, bthprint.inf.old and etc... In short, change the extension. If you already have any bthXXX.PNF files, rename them too in the same manner.
  5. Reboot only after step 4.
Note: Service Pack 3 installation, will also place these .inf files under %WINDIR%\inf. You need to do the same thing. Rename the bthXXX.inf files after the installation but before rebooting.

Good luck!!!
  Reply With Quote
The Following 5 Users Say Thank You to tnsilver For This Useful Post:
Show/Hide list of the thanked
Old 04-06-2009, 16:52   #2 (permalink)
Freak Poster
hima010's Avatar
Join Date: Jul 2008
Location: >> KUWAIT <<
Age: 29
Posts: 224
Member: 820946
Status: Offline
Sonork: ...........
Thanks Meter: 185
  Reply With Quote
The Following User Says Thank You to hima010 For This Useful Post:


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is Off
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
thread Thread Starter Forum Replies Last Post
My spiderman box after update Usb device not recognized islam01 SpiderMan 77 12-17-2011 14:04
U600 of usb device not recognized after flash ? kiubo NSPRO 3 03-08-2009 13:50
V3 dead and device not recognized even with TP!!! tsarkh Motorola Hardware Repair 1 05-29-2007 11:07
Belkin F8T001uk v2 Widcomm Bluetooth USB Adapter Dongle Not Recognised as usb device rmtrmt Bluetooth-Hardware 1 10-13-2004 17:58


All times are GMT +1. The time now is 23:49.

Powered by Searchlight © 2018 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2017 -
Page generated in 0.22583 seconds with 8 queries