I have similar issue as below. but when I changed the 101 board, it works. I can't use that board which had upload issue?
Hi Asterion, we can try solving the upload issue if you could give us more info about your setup.We need the specifications of your PC, operating system, USB ports available.Did you try connecting the board to another PC? Most of the times these kind of problems are related to underpowering the board (the 101 is quite power hungry when it boots). CurieNano could suffer the same problem.To answer you question: the firmware has not been updated throughout the production batch, so two random boards should contain the exact same fw. BTW, if you update the firmware following an official procedure you are still under warranty, don't worry about that.BestM
This helped me on Ubuntu: sudo ~/.arduino15/packages/Intel/tools/arduino101load/1.6.9+1.28/scripts/create_dfu_udev_rule