Do you have any progress on the investigation of problem in new M500 hardware?
I suspect that there is a hardware problem with this new shipment of M500 for 270 units. To be simple, please do not discuss about the process to upgrade the firmware.
I just only insert the Thai simcard to the new M500 (firmware version 19) and the device is expected to work but it failed to capture the START and STOP when the vehicle turn on and off.