I have a Series 2 OEM module plugged into an old MaxStream USB development board for the series 1 modules.
The S2 OEM module originally came with the “Router/End Device AT” firmware loaded. I used X-CTU to load the “Coordinator AT” v1002 firmware. The firmware uploaded succesfully.
After the firmware update, it seems that I can no longer stay in command mode. If I enter “+++” using the 1sec guard times, I DO get the “OK” prompt, but then the module no longer responds to any commands. If I wait the specified guard time and enter “+++” again, I DO get the “OK” prompt.
Furthermore, reading and writing firmware with X-CTU fails. It always returns this error on writing:
Getting modem type…OK
Programming modem…Lost communication with modem
If I put a S2 module that I haven’t programmed into the same dev board, I can enter command mode and change parameters without any problems. Also, X-CTU is able to read the firmware and paramters.
Is anyone aware of any problems related to using one of the old dev boards with the new modules?
Can an offer any tips to get this issue resolved?
Thank you for any help!