First of all, don't insert a USB flash drive. Install the latest version of Yang Lian UT 167 mass production tool V 1[ 1].67.9.9_ Click Start → Program →MFPT 1 167→ Run Inf to update VID input125f. If you don't approve, click on the port refresh, and then you can do mass production yourself.

Supplement.

Tip: The number of input devices does not match the maximum device list! ! ! It should be brushed after confirmation. . If it doesn't come out, it's your USB flash drive. You can try to save large files to a USB flash drive to see if the card is stuck, or you can use a USB flash drive detection tool to detect the USB flash drive. I've been in this situation. At that time, my USB flash drive was ready for mass production, but it took about 5 minutes to show that 1 was a problem with my USB flash drive. Accessing files is a bit slow, I can feel it. Later, I sent the USB flash drive directly to the store I bought and asked them to change it. In return, it is UT 165, and then download the tool of UT 165. According to the above operation, we can directly see the success of mass production.