SIM808 GPS PROBLEM, Please help!

I got sim808 then i checked all function… GSM GPRS is ON but GPS isnt worked. I used AT+CGPSPWR=1 then sim808 sent feedback +CME ERROR: 100. Whats wrong with this module? Please help somebody…

Feedback:
AT+CGPSPWR=1

+CME ERROR: 100
Command error… Currently GPS commands only supported for SIMCOM modules

AT+CGPSRST=0

+CME ERROR: 100
Command error… Currently GPS commands only supported for SIMCOM modules

AT+CGPSINF=0

+CME ERROR: 100
Please check if the module supports GPS feature.

Did you ever get a reply? I get the same error

I've got the same GPS error on SIM808L EVB R14.18

SMS & Call (GSM function) works fine.

However, I've tried both AT+CGPSPWR=1 and AT+CGNSPWR=1 to no avail.

It returns "ERROR".

Does anyone know the solution?

Many thanks in advance.