Originally Posted by munky-head
Hey, thanks again.
Unfortunately, this doesn't help either. Windows doesn't recognize the watch as a device at all ("descriptor" error), so I'm unable to just manually replace the driver, which I've tried.
Also, I'm getting the same result on multiple PCs, so I don't believe it's a driver error...
Just out of curiosity, is your watch almost fully charged when you try to connect it to your PC? My watch connects fine via adb and fastboot, but when its battery reaches 90+ percent charge, I noticed that the connection gets very unstable and the entry for the watch in the device manager disappears and reappears rapidly. My guess is that the circuit in the charging cradle turns off when the voltage of the battery reaches a certain value and this might affect the data connection as well. I already replaced my original charging cradle with a new one because I thought the original one had a defective contact, but it also happens with the new one.
You could try to partly drain the watch battery by leaving the watch in recovery or bootloader mode for a certain time (maybe half an hour to an hour) and afterwards try to connect it again to your PC.