With all new firmware versions of Mototrbo radios, Restricted Access to
System (RAS) is enabled by default. To change it, use CPS to navigate to
"Security" where you can delete the RAS key entry, or type in a RAS key
if you wish to use RAS.
Please see attached picture for clarity.

Please remember to enable "Expert View" before you try this or you will not see the fields required:
