We use a private APN, not a public one.
After the new firmware is downloaded and installed the device cannot connect to our private APN anymore.
I ran a AT+WDSS=1,1 which reported me CME Error 149 which is PDP Authentication Error.
So I ran a AT+WDSS? to see the current values. The result was:
Than I tried to set the APN values manually:
After that tried again an AT+WDSS=1,1 and it successfully connected back to the AV portal and proceeded with the rest of the pending operations.
Seems like the password for the APN disappears but the rest of the settings stay during a F/W update.
Why do you think this happens? Is there a bug/issue/limitation with updating firmwares in a private APN configuration?