Type: Answers
Area: Component

Last Modified: November 08, 2012
Version Found: v11.1 Service Pack 1

Why am I unable to see my USB-Blaster in a 64-bit version of the Quartus II software version 11.1 SP2?


There is an issue in the 64-bit version of the Quartus® II software version 11.1 SP2 that installed the USB-Blaster™ driver on your Windows Vista, XP, or 7 64-bit machine. Due to this issue you will be unable to locate the USB-Blaster in the Quartus II software programmer.


To correct this driver installation issue you will need to install patch 2.11 for the Quartus II 11.1sp2 software. If you are seeing this issue in Quartus II version 11.1sp1 you will first need to upgrade to Service Pack 2 before installing the patch.

Procedure for installing the patch:

1. Run <acds install directory>\quartus\bin\jtagserver --uninstall
2. Install patch
3. Run <acds install directory>\quartus\bin\jtagserver --install (if on 64-bit, run bin64\jtagserver)

This issue only affects 64-bit versions of the Quartus II software. 32-bit installations are not affected.

The following patch can be used to fix the issue in Quartus II 11.1 SP2:

This issue will be fixed in a future version of the Quartus II software.

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