USB Blaster shown as "Unknown Device"

Hi all,

I have the solution to my problem.

I bought the DE1 board with the usb blaster

the first time it was recognised as usb<->serial

what i did:

download FTprog form FTDI, whit this you can configuer the FTDI chip, also if it dousnt work in quartus.

next you have to check that the vendor ID and Product id are the same as in the USBblaster .inf driver. this values were wrong.

right settings:

costum VID/PID : Costum VID/PID (not FTDI Default)

Vendor ID : 09FB (not 0403)

Product ID : 6001

USB version nummer USB 2.0

Bus Powered

100mAmps

USB remote Wake Up :off

Pull Down :On

Manufacturer : Altera (not FTDI)

Product Description: USB-Blaster

Serial number enabled: checked

Auto Generate Serial No. Uncheched

Serial Number 91d28401

or Prefix : 91

this worked for me (v91sp2)

FIRST SAVE THE OLD CONTENT TO A XML FILE SO YOU CAN RESTORE THE SETTINGS

i use Win7 x64

I HOPE YOU GET IT UP