Lilygo-T-A7670G GPS problem
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 Hi. My company bougth one of those boards but I don't know if it was with or without GPS. I have been working with it without any problem using ESP-IDF modem component (pppos client, cmux,...). Now, I want to use A7670G incorporated GNSS in a project. However, any command related with GPS answer with ERROR response. AT+CGNSSPWR, AT+CGPSINFO, AT+CAGPS,.. with everyone I get <ERROR> response. It makes me think that modem was bougth without GPS version. If those command would be supported, AT+CGNSSPWR=? response should be valid instead GPS was not correctly configured.      Last one are added to assert that the module is working. My question is... is it a "problem" with A7670G device that has not internally GPS device? or, is it problem with A7670G firmware version? If board bought was not GPS version, is there a way to enable GPS uploading new firmware version to modem? Response to AT+SIMCOMATI: Manufacturer: INCORPORATED 
 Model: A7670G-LLSE
 Revision: A011B12A7670M7
 A7670M7_B12V02_220613
 QCN:
 IMEI: 867284060415744
 MEID:
 +GCAP: +CGSM,+FCLASS,+DS
 DeviceInfo:OK 
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 @jmpmscorp very hard to say. 
 Here is the GitHub repository:
 https://github.com/Xinyuan-LilyGO/T-A7670X
 You might raise an “Issue” or try to contact Lewis He at LilyGO.
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 Thanks @teastain2. I got response from Lewis He on github issue. A7670G modem version has not integrated GPS. 
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 I bought A7670G with included GPS antenna but have the same errors. What it suppose to work?? What is the reason to advertise that this device supports GPS?? 
