Hello i am having problems with USBasp unknown device even thought I downloaded from http://www.fischl.de/usbasp/ on my window XP. I tried to update driver libusb_0.1.12.1. then it said cannot install this hardware. both with USBasp into computer and without it. What wrong with it? when I put my USBasp into computer it does not showing the green light turn on. itself turn off.
would you please help me what is better others way? thanks!