Thank you for your question,
In order to set total odometer value you SMS command "setparam"
Information on SMS/GPRS commands can be found in our wiki:
Trip Continuous distance counting (ID=1153)
For this feature I/O#11 ODOMETER must be enabled. If I/O ODOMETER is enabled, and Continuous distance counting variable is set to Continuous (value 1), TRIP distance is going to be counted continuously (from TRIP start to TRIP stop) and shown as I/O ODOMETER value.
So, setparam 1153 value should be used.