Follow the instructions in this link: http://www.terasic.com.tw/wiki/Altera_USB_Blaster_Driver_Installation_Instructions
For Windows 10, do the following:
- Plug the USB-Blaster into your PC.
- Open the Device and Printers (Control Panel | Devices and Printers).
- Under Unspecified, USB Blaster should be listed. Right mouse click on this and then select Properties.
- Select the Hardware tab and select Properties.
- A new window should pop up with the General tab already selected. Select Change Settings.
- Again a new window should pop up with the General tab already selected. Select Update.
- Select Browse my computer for driver software.
- Find <Path to Quartus II installation>\quartus\drivers\
- (Note 1: Your altera file is located at the location you selected when you first installed quartus. The location listed in this document is the default location)
- (Note 2: Stop at the drivers folder, i.e., do NOT go deeper by opening a folder within the drivers folder)
- Select OK. Make sure the proper path was selected then select Next.
- If the Windows security window pops up Check the Always trust software from “Altera Corporation”box and select Install.
For Windows 7 and Windows 8, do the following:
- Plug the USB-Blaster download cable into the PC. The following will appear on the screen: Device driver software was not successfully install. Select Click here for details.
- Select Change settings…
- Now cancel this (probably by selecting Cancel)
- Open the Device Manager (Windows Key | Control Panel | Device Manage)
- Under Other devices, USB Blaster should be listed. Right mouse click on this and then select Update Driver Software…
- Select Browse my computer for driver software
- Find <Path to Quartus II installation>\quartus\drivers\, then select Next; (Note: Stop at this folder, i.e., do NOT go deeper by opening a folder within the drivers folder)
- Check the Always trust … box and then select Install
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