Sim7600 firmware update

#1

sim7600 firmware update successfully but AT+CFUN? give response CFUN: 5,
how to recover factory mode

#2

You can set AT+CFUN=1 manually.
But you cannot reset firmware to factory default. Its always wise to note the current firmware version before updating it with new one, so that you can always fall back.

#3

I tried many time AT+CFUN=1 but response is +CME ERROR : Phone Failure then what i do