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lkarp1
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12 hours ago

USB Blaster II Problem

Hello,

I’m having a persistent issue with my USB-Blaster II programmer.

No matter what I try, the programmer is detected only as a USB-Blaster variant, without the TCK speed option, and it does not work ...

Occasionally, I can get it working by removing the installed driver and reinstalling it. However, after unplugging the programmer or restarting the computer, it reverts back to being detected as the USB-Blaster variant. Then I have to repeat the process: remove the driver, reinstall it, restart the JTAG server, or sometimes restart the whole computer. Even when it works, it only lasts for a single session.

I have tried several Quartus Programmer versions, but the issue remains the same. The strange part is that I do not have this problem on my personal laptop or on my colleagues’ computers, so it seems specific to this machine. IT Helpdesk was also was not able to solve this problem

Has anyone encountered this issue before or found the root cause?

This is especially frustrating because I need to program a Cyclone GX device, and other programmers do not work for this use case.

Any suggestions would be appreciated. Thank you!