Resolved! TFA ST Toolkit v4 (kirkstone 5.15)->USB DFU label problem
After download TFA, USB DFU device is marked as "UNKNOWN":#dfu-util -a 1 -D tfa_v4.stm32 && dfu-util -a 0 -e && sleep 2 #dfu-util -l dfu-util 0.9 Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc. Copyright 2010-2016 Tormod Volde...