Could be, but sadly I don't have another one. I'll try to figure something out with the reseller of the DAC and the other one from which I bought the cable (not the same).

Hello, I have a weird issue with ZEN DAC V2 which I bought two days ago. I bought it with Meze 99 C and their silver balanced 4.4 cable. Plugged that setup in right away, everything worked, sound was amazing. Then I wanted to do some A/B cable testing so I tried stock Meze cable in 6.3 single...

Thanks a lot, I ran the DPInstall.bat again and restarted. I think mainly restarting did the trick and the firmware update succeeded this time. Sorry, for the confusion - I usually do not restart for several weeks/months. :blush:

The only thing I found in device manager with "DFU" on it after I switch device to DFU mode is this: I don't understand what you are actually suggesting. :)

I'm using Windows Defender. Turned real-time protection and all other settings off. Downloaded the firmware fresh and ran it - unfortunately the same error. :(

I cannot update firmware on my Fiio BTA30 Pro. Running Windows 10, tried both 4.47.0 and 5.22.0 beta DAC drivers with combination of both 1.12beta and 1.3 firmware, but I always get this: The full error says: Any suggestions, please, how to fix this?