diff --git a/Readme.md b/Readme.md
index 65b15ce..19905fa 100644
--- a/Readme.md
+++ b/Readme.md
@@ -31,6 +31,14 @@ make
 sudo make install
 ```
 
+## maybe install CMSIS-DAP probes driver
+
+```bash
+sudo cp openocd/contrib/60-openocd.rules /etc/udev/rules.d  
+sudo udevadm control --reload 
+sudo reboot
+```
+
 ## may be install sv2v
 
 `https://github.com/zachjs/sv2v`