Try a different USB port (preferably on the motherboard rather than a hub) or swap the cable.
Connect the device to a computer using a (ensure it supports D+/D- data transfer). Boot the device and wait approximately 2 seconds. fnirsi dsotc2 firmware
openocd -f interface/stlink-v2.cfg -f target/stm32f1x.cfg -c "init; dump_image fw_dump.bin 0x08000000 0x40000" Try a different USB port (preferably on the