So I am flashing bluepills with the generic DFU bootloader.
- then programming via Arduino with dfu-util 0.8
- the programming works..
lsusb (this is on Linux) , does now show device
Bus 002 Device 025: ID 1eaf:0003
all the time, It does not help to disconnect it - nor plug in another.
now I cannot re-flash it, applying power again, I see the rapid blinking of the bootloader, but dfu 0.8 will just end with
Failed to open serial device. dfu-util: Invalid DFU suffix signature dfu-util: A valid DFU suffix will be required in a future dfu-util release!!! dfu-util: Cannot open DFU device 1eaf:0003 dfu-util: No DFU capable USB device available 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 firstname.lastname@example.org Waiting for /dev/ttyUSB0 serial...Done