Hello, I have several Q2686 modems, all of them with 7.52 Firmware. I need to send AT+WOPEN=6,1024 in order to use DOTA. The problem is that some of the modems return +CME ERROR:551 after sending this command and I cannot format A&D memory, while others do not have this problem at all. I have bee…

+CME ERROR:551 after sending AT+WOPEN=6,1024

Rex_alex November 9, 2016, 8:25am 2

For 7.52FW version , I will suggest you to use filesystem for better performance…

-Alex