Common UART problems

USB DriverThese are the common UART problems you might find. If you are having UART problems with the Cypress ZedBoard then you can try the UART workarounds which are listed here. If those don’t work then the following might solve the installation problem for you. Note that the other page has a number of similar install options. This is the cypress usb serial driver installation.

Cypress ZedBoard UART solution:

  1. Download the driver :
  2. Click on the downloaded file called : CypressDriverInstaller_0.exe
  3. With the ZedBoard USB-UART connected open Device Manager

Device Manager

4. Right-Click on “”Virtual Serial Port Device 00” and select the Uninstall option

Common UART problems

5. Click on  “Delete the driver software for this device” if that is an option

6. While the  ZedBoard USB-UART is connected Right-Click on “USB to UART Adapter”

Cypress ZedBoard UART

7. Now  click the Uninstall option. Also click “Delete the driver software for this device” option;

8. You have now removed the Windows Update driver from your system;

9. Important – disable your wired and wireless networks now or it will not work;

10. Now disconnect ZedBoard USB-UART and reconnect;

11. Once you reconnect it will show “Cypress-0123456” now locate the driver you downloaded above;

12. This normally found at :

C:\Program Files (x86)\Cypress\Cypress USB-Serial Driver\DriverBinary\CDC_Driver\bin\win7\x86\

13.  You will see the the “Virtual Serial Port Device 00” will come back;

14. Follow step 12 again for the port and that’s about it. These are the most common UART problems.


The USB to UART Bridge Controller (CY7C64225) is a fully integrated USB to UART controller that provides USB connectivity to devices with a UART interface. The device includes a USB 2.0 Full-Speed Controller, Voltage Regulator and internal EEPROM in a 28-pin SSOP package. These features make the product ideal for upgrading legacy peripherals to USB interface. USB to UART Bridge Controller is a USB-IF certified, fixed function device that requires no programming from the user. Royalty free Virtual COM Port (VCP) drivers available with it ensure that it appears as a COM port to PC applications. See also the Silicon Labs UART Drivers on here.

Firstly if you recall 20 years ago we used to have dialup modems and the PCTel software modem did the exact same thing. Secondly there was a port driver as well as a modem driver. Thirdly today the UART drivers are installed in much the same way as the old PCTel modems. Finally there is little difference in their installation. See also the HTC MTP Device Driver Win 7 as well as the Can’t Rename, Move or Delete files Windows 10 for more common issues that you might have today.

Cyprus no longer exists so we have added the driver here.


driver download

Cypress USB UART driver



About Tracey Brown

I develop websites and content for websites related to high tech from around the world. See more pages and content about technology such as USB and other IT developments around the world. You can follow the other websites as well and search this website for more information on mobile phones and other USB components.