Fix device access rights

README.md

@@ -87,6 +87,8 @@ echo -ne \\x05\\x01\\x09\\x06\\xa1\\x01\\x05\\x07\\x19\\xe0\\x29\\xe7\\x15\\x00\
 ln -s functions/hid.usb0 configs/config.1/
 # Activate device
 ls /sys/class/udc > UDC
+# Change device access rights
+chmod a+rw /dev/hidg0
 ```
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