1.    02 Aug 2016 #1
    Join Date : Nov 2014
    UK
    Posts : 239
    Windows 10 Pro 64bit

    Prolific USB-Serial


    I've previously had this working on my system but, for whatever reason, it's no longer being recognised by my mapping software when I attempt to transfer routes to my GPS.

    As you can see the driver is installed but with an exclamation mark to indicate a problem.

    Searching automatically for an update does not work & when I manually select the driver that I have, it comes with the comment that the correct driver is installed - but still not working.

    Click image for larger version. 

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    Any suggestions or comment appreciated.
      My ComputerSystem Spec
  2.    02 Aug 2016 #2
    Join Date : Nov 2015
    Posts : 2,819
    64bit Win 10 Pro ver 1709 Build 16299.19

    Hello Wightwalker,

    You need to roll back to an earlier driver. The newer drivers have a built in check that detects when older devices do not have the correct chips. If rollback fails you need to reinstall the original driver that came with your USB-Serial port attachment.

    The problem relates to China imports which are fake chips and were used in many devices sold in recent years. See the warning on the Prolific page and also do a Google search.
      My ComputersSystem Spec
  3.    02 Aug 2016 #3
    Join Date : Nov 2014
    UK
    Posts : 239
    Windows 10 Pro 64bit
    Thread Starter

    Thanks.

    Have now got things working in a rather 'round-about' way.

    I have 2 USB - Serial Interface cables.


    1. The older which used to previously work on Windows 10 still works OK on a Windows XP Laptop proving that the interface is still functional.
    2. The newer interface cables when connected to Windows 10 automatically installs the drivers & works on Windows 10, but will not work on Windows XP (I don't have a driver disk for this cable but it is CH340 v3.4.2014.8)
    3. If I uninstall all relevant drivers, then install my original Vista Driver v3.2.0. & plug in the interface cable, Windows 10 will then update drivers BUT with Code 10 error. If I now update drivers back to v3.2.0.0 it works & I have a singe interface cable that works on both Windows 10 & Windows XP

      Click image for larger version. 

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      However, when I unplug the cable & re-insert, Windows 10 will automatically update the drivers to the NON-Working ones & I have to then re-select the v3.2.0.0 ones every time.

      Is there a way to stop Windows 10 from updating these drivers every time the cable is inserted?
      I've tried changes the System settings for updates but without success.

    Click image for larger version. 

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      My ComputerSystem Spec
  4.    02 Aug 2016 #4
    Join Date : Nov 2015
    Posts : 2,819
    64bit Win 10 Pro ver 1709 Build 16299.19

    Yes there is a tool that will hide certain driver updates and you select which ones. Here is the link:

    https://www.tenforums.com/tutorials/8...dows-10-a.html
      My ComputersSystem Spec
  5.    02 Aug 2016 #5
    Join Date : Nov 2014
    UK
    Posts : 239
    Windows 10 Pro 64bit
    Thread Starter

    Quote Originally Posted by philc43 View Post
    Yes there is a tool that will hide certain driver updates and you select which ones. Here is the link:

    https://www.tenforums.com/tutorials/8...dows-10-a.html
    Thanks, but if I understand how this works, it only allows you to select & prevent updates that are due to be installed.

    When I plug the USB cable in, the driver is updated from within Windows itself & without the need to download anything at all.
      My ComputerSystem Spec
  6.    02 Aug 2016 #6
    Join Date : Nov 2015
    Posts : 2,819
    64bit Win 10 Pro ver 1709 Build 16299.19

    Have you tried uninstalling the updates first so that they are not available on your system?
      My ComputersSystem Spec
  7.    02 Aug 2016 #7
    Join Date : Nov 2014
    UK
    Posts : 239
    Windows 10 Pro 64bit
    Thread Starter

    Quote Originally Posted by philc43 View Post
    Have you tried uninstalling the updates first so that they are not available on your system?
    Yes.

    I uninstalled the prolific drivers, then installed v3.2.0.0.

    As soon as I plugged the USB cable into the port, Windows immediately changed these v3.6.81.357 & v 3.8.1.3 which don't work.

    Changing these back to v3.2.0.0 works but as previously mentioned as soon as I remove the cable/switch the PC off & re-insert the cable, Windows does a repeat & replaces these with v3.6.81.357 & v 3.8.1.3.
      My ComputerSystem Spec
  8.    03 Aug 2016 #8
    Join Date : Nov 2015
    Posts : 2,819
    64bit Win 10 Pro ver 1709 Build 16299.19

    Try deleting the driver files from the system folder as well so that windows doesn't find them again.
      My ComputersSystem Spec
  9.    03 Aug 2016 #9
    Join Date : Jun 2016
    Los Angeles
    Posts : 960
    Windows 10 Pro

    With the cable plugged in, using the latest drive, go to the Device Manager and Right click the Prolific device and Uninstall it, it should ask if you want to Delete the driver files as well. Do so, then restart.
    If that doesn't happen, right click the device, choose Properties/Driver/Driver Details. This will show you the location of the driver files, and you can manually delete them.
      My ComputerSystem Spec
  10.    03 Aug 2016 #10
    Join Date : Jun 2016
    Los Angeles
    Posts : 960
    Windows 10 Pro

    With the cable plugged in, using the latest drive, go to the Device Manager and Right click the Prolific device and Uninstall it, it should ask if you want to Delete the driver files as well. Do so, then restart. If that doesn't happen, right click the device, choose Properties/Driver/Driver Details.This will show you the location of the driver files, and you can manually delete them.
      My ComputerSystem Spec

 


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