on which OS ?
which cpu ? guessing stm32f103c8t6 ?
which board ? Blue Pill, Baite Mini, Maple Mini or something else
which core ? initial suspect is Rogers’
which Arduino issue 1.6.9 1.8.5 or something else
if they have internet, point them to the wiki and browse the stm32f103 boards, ask them to identify the suspect
nb i use linux so slight bias
1. do you know they have dfu-util installed ? and if it’s in the PATH ?
win [open a cmd window] type dfu-util and press return
linux [xterm]type dfu-util and press return
optimal is a version output mithering about help
stephen@i71:~$ dfu-util
dfu-util 0.8
Copyright 2005-2009 Weston Schmidt, Harald Welte and OpenMoko Inc.
Copyright 2010-2014 Tormod Volden and Stefan Schmidt
This program is Free Software and has ABSOLUTELY NO WARRANTY
Please report bugs to [email protected]
You need to specify one of -D or -U
Usage: dfu-util [options] ...
-h --help Print this help message
-V --version Print the version number
-v --verbose Print verbose debug statements
-l --list List currently attached DFU capable devices
-e --detach Detach currently attached DFU capable devices
-E --detach-delay seconds Time to wait before reopening a device after detach
-d --device <vendor>:<product>[,<vendor_dfu>:<product_dfu>]
Specify Vendor/Product ID(s) of DFU device
-p --path <bus-port. ... .port> Specify path to DFU device
-c --cfg <config_nr> Specify the Configuration of DFU device
-i --intf <intf_nr> Specify the DFU Interface number
-S --serial <serial_string>[,<serial_string_dfu>]
Specify Serial String of DFU device
-a --alt <alt> Specify the Altsetting of the DFU Interface
by name or by number
-t --transfer-size <size> Specify the number of bytes per USB Transfer
-U --upload <file> Read firmware from device into <file>
-Z --upload-size <bytes> Specify the expected upload size in bytes
-D --download <file> Write firmware from <file> into device
-R --reset Issue USB Reset signalling once we're finished
-s --dfuse-address <address> ST DfuSe mode, specify target address for
raw file download or upload. Not applicable for
DfuSe file (.dfu) downloads
