Thursday, 11 February 2010

USBASP programmer working on Windows 7 x64

It as not my brightest moment, but it has improved out computing experience at home, upgrading my XP to Windows 7. BUT, it broke the Usb driver, because Microsoft decided that signing all drivers without exclusion will improve the customer computing experience... I hate going outside the box to break my system, but I need my usb programmer to work so...

1. download driver from
2. Plug in device, browse path to downlaoded files
3. Install fails... no worry.
4. download DSO version 3b from
5. Run it, and select "sign a driver". browse to the driver c:\windows\system32\drivers\libusb0.sys
6. Put DSO into test mode
7. Reboot - it (should) now work

I think you can skip step 5


  1. Thxs, i was worried for a moment :D

  2. c:\windows\system32\drivers\libusb0_x64.sys in step 5 works for me.

  3. Thanks so much for this finally able to use my tool.

  4. I have posted drivers for windows 7. I had tried above method but it fails. Then I tried another method mentioned by someone on the internet using infWizard and it worked.

    I have uploaded working drivers on my blog page. Simply download and point windows to the driver directory.