Need help!KT2Pro blinking blue, not recognized by PC

It was the driver i tried to update earlier. I can’t upgrade firmware since it’s not recognized. The DFU says:". No device found. Please plug in the device you want to upgrade". :frowning:

@tsangyoujun @Gouwa It works now!! What solved it what this: I’ve tried to power it with different laptops. My old and new. I also tried a wall outlet and PowerBank. Nothing happend. BUT connecting it to my LG V40 with UAPP ( don’t know UAPP is necessary), but after the prompt from UAPP to use this as i Hi Res device , it works as normal again! Connected it to my PC and it works with Roon again😃

Last question: Should i used ASIO or WASAPI or my PC? It auto uses WASAPI in Roon.

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This usually occurs because the MCU Firmware is damaged or erased.

Strange, I guess your LG V40 reset the Tone2 Pro somehow.

Glad to know that it works again.

I tested the Tone2 Pro with Roon for a while, I believe we should just check to see which driver gives you the higher resolution output, for your file format. From my personal experience, DSD = ASIO, MQA = WASAPI. You can know which driver to use, by looking at the “audio output format” as indicated by the Khadas Audio Dashboard.