Upon first connection to your PC's USB port, Windows will prompt you to install the USB driver for the OpenBLT/USB bootloader device. This page contains step-by-step instructions for the USB driver installation and additional background information regarding the USB driver.

The following illustrates the driver installation in Windows XP. The procedure on Windows Vista and 7 is quite similar.

When prompted by Windows to install the driver, hit cancel and go to the Device Manager instead. Right-click the entry “WinUSB Bulk Device” and select “Update Driver…” from the popup menu:

By default, Windows want to search for the driver online, which can be a length process and it won't find it anyways. Instead, select “No, not this time” and click “Next >”:

On the next screen, select “Install from a list or specific location (Advanced)” and click “Next >”:

Select “Include this location in the search:”, browse and select the folder “<OpenBLT path>\Host\Drivers\USB” and click “Next >”:

Windows now installs the driver. When ready, the following screen is presented. Click “Finish” to conclude the driver installation.

The USB driver makes use of the WinUSB user mode driver. Support for WinUSB is available in versions starting with Windows XP. The USB driver for OpenBLT is configured to run on Windows XP, Vista, and 7. Both 32- and 64-bit operating system versions are supported.

Note that the USB driver's vendor ID (VID) and product ID (PID) are randomly selected and meant for demonstration purposes only. When using OpenBLT/USB in a product, please be so kind and obtain your own VID and PID from http://www.usb.org/developers/vendor/. Once obtained, you can modify the USB driver's VID and PID by editing the file “.\Host\Drivers\USB\bulkdevice.inf”:

; Modify VID_0145 to change the Vendor ID and modify PID_0023 to change the Product ID
[MyDevice_WinUSB.NTx86] 
%USB\MyDevice.DeviceDesc% =USB_Install, USB\VID_0145&PID_0023 

[MyDevice_WinUSB.NTamd64] 
%USB\MyDevice.DeviceDesc% =USB_Install, USB\VID_0145&PID_0023