add flash scripts to flash e1_tracer via https://github.com/dword1511/stm32-vserprog.git and dfu-util
diff --git a/flashing/tracer_flash_bootloader.sh b/flashing/tracer_flash_bootloader.sh
new file mode 100755
index 0000000..4215cc5
--- /dev/null
+++ b/flashing/tracer_flash_bootloader.sh
@@ -0,0 +1,6 @@
+#!/bin/sh
+
+cat e1tracer-bootloader-20200822.bin 1M0xff.bin > tmp
+dd if=tmp of=flashme1M.bin bs=1024 count=1024
+rm tmp
+flashrom -p serprog:dev=/dev/ttyACM3:4000000 -w flashme1M.bin