Greg, So long as the module hardware is a 3.1 or later in 3.x series, then replacing the modem is simple - just order the new modem and swap it out. Check the label printed on the main OVMS board. Note that antenna connection points are different in the modem - so follow the table printed on the circuit board. The SIM should work fine for 2G; 3G, or 4G. Regards, Mark

On 14 Apr 2024, at 8:55 AM, Greg D. <gregd2350@gmail.com> wrote:

 Hi folks,

I have one of the original production OVMSv3 modules, with the then-current 3G modem. I've been getting by with Wi-Fi at home, and the one or two cell sites around town that still seem to have connectivity, but those sites are gone now too. What is involved in upgrading to the new modem?

Do I simply get the modem, or do I need a whole new module? What about the SIM? The status page reports: Version: 3.3.003/ota_1/eap (build idf v3.3.4-848-g1ff5e24b1 Sep 1 2022 08:40:30) Hardware: OVMS WIFI BLE BT cores=2 rev=ESP32/1; MODEM SIM5360 I'm using a Hologram SIM, and I'm in North America (California USA, if that matters).

Thanks,

Greg

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