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@@ -42,5 +42,11 @@ To flash using dfu-util, first put the board in dfu mode by pressing
BOOT, pressing and releasing RESET and releasing BOOT. Then:
```shell
-dfu-util -d 0483:df11 -a 0 -s 0x08000000:force:unprotect:leave -D keyseebee.bin
+dfu-util -d 0483:df11 -a 0 -s 0x08000000:leave -D keyseebee.bin
+```
+
+The fist time, if the write fail, your flash must protected. To unprotect:
+
+```shell
+dfu-util -d 0483:df11 -a 0 -s 0x08000000:force:unprotect -D keyseebee.bin
```