AT+CFUN parameter settings can't be saved to the module?

IoT Modules MC/EM Series
1

Hi

We test the EM7421 module AT+CFUN command in yocto.
We found that the EM7421(FW: 01.14.22) AT+CFUN parameters could not be stored in the module, the settings were cleared when we reset the module.
But we tried the EM7565(FW: 01.14.02) module and didn’t have this problem, we reset the parameter to 0 or 1 and the parameter will revert back to 1.
Is this issue affected by the operating system or firmware version?

2

You can compare the cfunpersist parameter in at!custom?

3

The EM7565 and EM7421 test modules are set in the same parameters as shown in the figure below.
The cfunpersist parameter is disable in AT!CUSTOM

image
image1172×770 69.3 KB

4

Are they using same firmware and carrier PRI?