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I used EC200UCNAAR03A03M08 firmware after that i Flash an QuecPython firmware but i am facing error in call at command so i would like to go back to EC200UCNAAR03A03M08 it would be helpful if someone share the firmware to chintanmungra.chintan@gmail.com Thanks.

hi
Ok, I will provide the firmware to you via email.
In addition, Could you tell me what problems your encountered after burning Quecpython firmware?

I wanted to Use dtmf decoding but error 58 was recived via at command and didn’t work in library so i wanted to roal back

Please refer to the link below
voiceCall - Voice Call - QuecPython (quectel.com)

Please note one thing. If you use Quecpython, you need to use the API to implement the function and not the AT command