Has anyone encountered an issue in upgrading to the latest V100R100C10B657SP3 firmware on the SARA N211 that results in the NBAND? query returning 8 but the set (AT+NBAND=8) command returning ERROR?
When I query AT+NBAND=?, it returns () instead of (8,20)
The previous FW V100R100C10B656 worked with AT+NBAND=20 and the SIM registered successfully on the network.
In addition to the above AT+CFUN=1 also returns ERROR where it had previously fired up successfully with the old FW.