Cannot upload sketch to DFRduino nano

I previously succeed in uploading the code to DFRDuino Nano (Arduino Nano Compatible) (with wrong digital pins) but after changing pin I cannot upload it again.

From the [document][1], I changed back the pins 0 (RX) and 1 (TX) are used for serial communication.

In arduino ide (1.8.19), I choosed **board: Arduino Nano** and **Processor: ATmega328P(Old Bootloader)**

The error:
 

```

…

avrdude: Version 6.3-20190619

        Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

        Copyright (c) 2007-2014 Joerg Wunsch

        System wide configuration file is "C:\Program Files\WindowsApps\ArduinoLLC.ArduinoIDE_1.8.57.0_x86__mdqgnx93n4wtt\hardware\tools\avr/etc/avrdude.conf"

        Using Port                    : COM3

        Using Programmer              : arduino

        Overriding Baud Rate          : 57600

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x00

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x00

avrdude done.  Thank you.

An error occurred while uploading the sketch

```

I have reset both the board and computer but without luck.

Any idea how to solve it ?

 [1]: https://wiki.dfrobot.com/Arduino_Nano_328__SKU__DFR0010_