Quote from: gingerbaker on June 30, 2015, 07:51:54 PM

I need some help with getting my new U3 to be recognized *by cgminer*.

My computer recognizes it under devices and printers as the name of the driver; CP2102 USB to UART Bridge Controller).

I installed the driver (silabs USBtoUARTBridgeVCPDrivers.aspx).
Then went to zadig and did everything correctly per Bitmain's U3 user guide.

Then when using cgminer (4.8.0, though it happened in older versions too) I get the following errors:

USB init, open device failed, err -12
You need to install a WinUSB driver for - CMR device 3:1 (after re-boot using different USB port- 3:2)
And associate - CMR device with WinUSB using zadig
See README.txt file included for help
BitMain detect <3:1> failed to initialize
No devices detected!
Waiting for USB hotplug devices or press q to quit

I've tried using different USB ports, though I dont think that's the issue as my computer always recotgnizes the device in System Panel.

Can someone please help?

Thanks.

Don't use 4.8.0, go to ck's page and download 4.9.2.

Re-zadig until it works (plug in power to U3, then usb, then zadig it, then unplug usb, count to 5, replug usb), the message seems to be the one you get when you don't have the winusb driver zadig'd.