Unable to disable GPS on RAK5205/7205

I have a project that uses several RAK5205 and 7205’s. It doesn’t need GPS and is battery powered. To save power, I attempted to disable GPS but this is what I get:

at+set_config=device:gps:0
ERROR:RUI_AT_UNSUPPORT 1

Firmware Version: RUI v3.0.0.12.H.T1

I am very sorry that it is impossible to turn on or off the sensor due to some restrictions.