EEVblog Electronics Community Forum
Products => Test Equipment => Topic started by: Jester on October 16, 2016, 02:39:02 pm
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Yesterday I purchased a USB to RS232 converter from a local electronics retailer. Upon installation (Win7) device manager flags the driver as bad with the yellow!
Device status is reported as "This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)"
The VID and PID indicate Prolific USB-to Serial Comm Port 067B & 2303
Windows has installed driver version 3.8.1.3
My best guess is that the hardware is either old or using a cloned Prolific chip. See: http://www.totalcardiagnostics.com/support/Knowledgebase/Article/View/92/20/prolific-usb-to-serial-fix-official-solution-to-code-10-error (http://www.totalcardiagnostics.com/support/Knowledgebase/Article/View/92/20/prolific-usb-to-serial-fix-official-solution-to-code-10-error)
The device came with a DVD with about 20 different drivers, however Windows refuses to install these older drivers, instead installing version 3.8.1.3 (05/07/2016) and stating The best driver software for your device is already installed, ignoring the supplied drivers even when I select them for installation.
Is there away around this or do I need to return it and try another vendor?
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Hi,
if you bought it from aliexpress/ebay at very low price than it's fake chip for sure.
Same may appear when buy FT232R.
But it's no problem because to solve this You must install older version of driver. Go to device manager, then manually click "update", and point to .inf file by hand.
Check attachment, I'm using this version.
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Hi,
if you bought it from aliexpress/ebay at very low price than it's fake chip for sure.
Same may appear when buy FT232R.
But it's no problem because to solve this You must install older version of driver. Go to device manager, then manually click "update", and point to .inf file by hand.
Check attachment, I'm using this version.
Perhaps that method worked in the past, but the Win7 version I'm running refuses to install any version except the latest, it simply reports" The best driver software for your device is already installed"
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Return it. It is possible to get it working but it will be a pain.
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Uninstall the current driver first.
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Finally got it working through a combination of using admin rights and using the uninstaller in my original post. Entirely possible Windows will update the driver in the future and kill it so for the record the working version is 3.8.13 dated 05/07/2016, which is odd as this is a much newer driver.