The usrapp is inside the USR folder.
There's 2 "configs" folders. One in USR, other in SYS, with similiar files, despite different values for configurations. Which one is the correct one?
The file is \usr\configs\arm.old or \usr\configs\arm.xxxx.cfx (where xxxx is the robot's serial number).
Edit the file and control the "OrderNumber"
+1 for EIEsgalho : To have a recent backup is a very good idea !