I just discovered a really simple way to install USBasp driver for all versions of Windows. This is by using a driver installation tool called Zadig. It provides signed drivers for libusb, which means a lot of open-source USB drivers (including USBasp and USBtiny) will now work perfectly on Windows 7, 8, 8.1, 32-bit, 64-bit, without messing with driver signature enforcement! Check my blog post from last night for details:
Dead-simple, well I have tried installing this on 3 different Window 7 machines. While it appears to be simple it simply is not working. First, I have plugged my opensprinkler hardware in to the USB cable while holding the b2 but as described. My device is detected as an unknown device. So I loaded up the Zigdig app as described and selected the libusb-win32 and pressed Install and it fails. By the way my drop down box list is empty. So I go to options and checked the box that say’s list all devices and the box populates. I select the unknown device however the usbid remain 0000 0000. I tried to install the driver and it still fails.
I tried to extract the drivers but it does not tell me where they were extracted. So I have not been successful with installing the driver so I have not been able to update my device.