I have the latest firmware installed on EM7455 for Verizon, ATT, GENERIC etc
I am attempting to switch the appropriate firmware file based on the SIM operator (by inserting SIM from different operators.). I have tried AT!IMPREF=”AUTO-SIM” but it does not work properly.
Is there any AT command to perform SIM operator and Active firmware matching?
Is there any way to automatically switch to correct firmware, if available? If the matching firmware is not available then switch to GENERIC firmware.