Hi,
Firs of all, install the right driver for USBasp. It is very important!
Follow the procedure what you can read above. For me the driver check was worked, too, when the correct driver
was installed.
Under Linux, the upgrade software doesn’t work at all. Kernel can see the USBasp, it is on the lsusb list and
in the dmesg messages but the program not communicate with Sprinkler hw (Ubuntu 14.04.x 64 bit).