there are 3 tested methods to install the usbasp driver for windows 7. one is using the driver signature enforcement override method, the other is directly editing the .inf file & the third one i have explained below. this worked for me when the first two failed…
follow these steps to install the usbasp drivers on windows 7 for both 64bit and 32 bit platform
1)download the zipped folder LibUSB-64bitfrom the following link
3)extract the file and browse to LibUSB-64bit\libusb-win32-bin-1.2.1.0\bin\x86
4)run inf-wizard.exe
5)Inf-wizard will start, click Next
6)select the device ‘USBasp’ from the lsit of devices shown and click next
7)make sure these values are associated with the give parameters before proceeding
vendor ID (hex format) = 0x16C0 product ID (hex format) = 0x05DC mi (hex format) = leave it blank manufacturer name = VOTI device name = USBasp
then click next
8)save the information file ‘.inf’ generated in
LibUSB-64bit\libusb-win32-bin-1.2.1.0\bin\amd64 (for 64 bit users)
LibUSB-64bit\libusb-win32-bin-1.2.1.0\bin\x86 (for 32 bit users)
9)click install now to install the driver
10)if a windows warning appears telling this driver is not verified , just click on ‘install this driver software anyway’
11)once the driver completes installation saying ‘installation successful’ click ok
thats it! you are good to go!
note – im using 64 bit edition of windows ultimate and this procedure worked for me when all the others failed. i have not tested this procedure for 32 bit systems though.