ATMega 2560 Uploading problem

Hello,

I am trying to upload the DCC++ project to ATMega 2560. From W10 via Arduino software, but it writes this error message:

avrdude: verification error, first mismatch at byte 0x136c
0xb8 != 0xf8

I didn´t find anything about this error message... Could give me any advice?

Is your board properly recognised in Windows device manager?
Have you tried another cable?

yes, I tried 3 more cables and my computer recognized the device because I installed the CH341 driver, already when I started to flash the ESP8266 chip... the device loads the software into the device for a few seconds everything flashes and then writes an error.

Please include the entire error message. It is easy to do. There is a button (lower right of the IDE window) called "copy error message". Copy the error and paste into a post in code tags. Paraphrasing the error message leaves out important information.

In the Tools, Board menu, what have you selected?

Arduino: 1.8.16 (Windows 10), Board: "Arduino Mega or Mega 2560, ATmega2560 (Mega 2560)"

Sketch uses 41240 bytes (16%) of program storage space. Maximum is 253952 bytes.

Global variables use 1677 bytes (20%) of dynamic memory, leaving 6515 bytes for local variables. Maximum is 8192 bytes.

C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega2560 -cwiring -PCOM7 -b115200 -D -Uflash:w:C:\Users\MICHAL~2\AppData\Local\Temp\arduino_build_571624/CommandStation-EX.ino.hex:i

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 (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"



     Using Port                    : COM7

     Using Programmer              : wiring

     Overriding Baud Rate          : 115200

     AVR Part                      : ATmega2560

     Chip Erase delay              : 9000 us

     PAGEL                         : PD7

     BS2                           : PA0

     RESET disposition             : dedicated

     RETRY pulse                   : SCK

     serial program mode           : yes

     parallel program mode         : yes

     Timeout                       : 200

     StabDelay                     : 100

     CmdexeDelay                   : 25

     SyncLoops                     : 32

     ByteDelay                     : 0

     PollIndex                     : 3

     PollValue                     : 0x53

     Memory Detail                 :



                              Block Poll               Page                       Polled

       Memory Type Mode Delay Size  Indx Paged  Size   Size #Pages MinW  MaxW   ReadBack

       ----------- ---- ----- ----- ---- ------ ------ ---- ------ ----- ----- ---------

       eeprom        65    10     8    0 no       4096    8      0  9000  9000 0x00 0x00

       flash         65    10   256    0 yes    262144  256   1024  4500  4500 0x00 0x00

       lfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

       hfuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

       efuse          0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

       lock           0     0     0    0 no          1    0      0  9000  9000 0x00 0x00

       calibration    0     0     0    0 no          1    0      0     0     0 0x00 0x00

       signature      0     0     0    0 no          3    0      0     0     0 0x00 0x00



     Programmer Type : Wiring

     Description     : Wiring

     Programmer Model: AVRISP

     Hardware Version: 15

     Firmware Version Master : 2.10

     Vtarget         : 0.0 V

     SCK period      : 0.1 us

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.02s

avrdude: Device signature = 0x1e9801 (probably m2560)

avrdude: reading input file "C:\Users\MICHAL~2\AppData\Local\Temp\arduino_build_571624/CommandStation-EX.ino.hex"

avrdude: writing flash (41240 bytes):

Writing | ################################################## | 100% 6.74s

avrdude: 41240 bytes of flash written

avrdude: verifying flash memory against C:\Users\MICHAL~2\AppData\Local\Temp\arduino_build_571624/CommandStation-EX.ino.hex:

avrdude: load data flash data from input file C:\Users\MICHAL~2\AppData\Local\Temp\arduino_build_571624/CommandStation-EX.ino.hex:

avrdude: input file C:\Users\MICHAL~2\AppData\Local\Temp\arduino_build_571624/CommandStation-EX.ino.hex contains 41240 bytes

avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 5.27s

avrdude: verifying ...

avrdude: verification error, first mismatch at byte 0x136c

     0xb8 != 0xf8

avrdude: verification error; content mismatch

avrdude done. Thank you.

the selected serial port

does not exist or your board is not connected

I have selected Arduino Mega or Mega2560 as Board