Help, modems are not working. Tried different USB boards. maybe you need to flash them? The system is detected but I can not connect. you can send the latest firmware for rm-500-gl with instructions for the firmware, program and set of at-commands
What OS the host system is running?
windows 10. now there is a problem with the firmware. one modem started showing quectel qdloader 9008, an error occurred during the update download process FAIL, DL_Firehose, Time out!. when trying to firmware other modems, another error about COM ports