Genuino upload problem

I have a problem uploading sketches to one particular Uno board. I have tried three different sketches to no avail. However I can upload those same sketches to another Uno board I possess.

I have worked my way through the troubleshooting guide, but nothing works, so far. The board is didplayed correctly in the device manager, the drivers are reported as up to date, and the board's details can be displayed from the IDE.

Can anyone help please?

[Your operating system. What kind of board you have.] Answered below.

[Whether or not you were ever able to upload to the board.] Yes. Can't be certain when the last time was though - I own several boards.

[If so, what were you doing with the board before / when it stopped working, and what software have you recently added or removed from your computer?] Probably not relevant: I can upload sketches to another (identical) Uno board with no problem.

A thought: is there a problem with connecting identical board models, one after the other? Something to do with caching data perhaps??

[The messages displayed when you try to upload with verbose output enabled] ...

Arduino: 1.8.7 (Windows 7), Board: "Arduino/Genuino Uno"

Sketch uses 1052 bytes (3%) of program storage space. Maximum is 32256 bytes.
Global variables use 9 bytes (0%) of dynamic memory, leaving 2039 bytes for local variables. Maximum is 2048 bytes.
C:\Program Files (x86)\Arduino\hardware\tools\avr/bin/avrdude -CC:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf -v -patmega328p -carduino -PCOM7 -b115200 -D -Uflash:w:C:\Users\OWNER9~1\AppData\Local\Temp\arduino_build_399408/blink_sos.ino.hex:i

avrdude: Version 6.3-20171130
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 : arduino
Overriding Baud Rate : 115200
AVR Part : ATmega328P
Chip Erase delay : 9000 us
PAGEL : PD7
BS2 : PC2
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 20 4 0 no 1024 4 0 3600 3600 0xff 0xff
flash 65 6 128 0 yes 32768 128 256 4500 4500 0xff 0xff
lfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
hfuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
efuse 0 0 0 0 no 1 0 0 4500 4500 0x00 0x00
lock 0 0 0 0 no 1 0 0 4500 4500 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 : Arduino
Description : Arduino
Hardware Version: 3
Firmware Version: 4.4
Vtarget : 0.3 V
Varef : 0.3 V
Oscillator : 28.800 kHz
SCK period : 3.3 us

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.00s

avrdude: Device signature = 0x1e950f (probably m328p)
avrdude: reading input file "C:\Users\OWNER9~1\AppData\Local\Temp\arduino_build_399408/blink_sos.ino.hex"
avrdude: writing flash (1052 bytes):

Writing | ################################################## | 100% 0.18s

avrdude: 1052 bytes of flash written
avrdude: verifying flash memory against C:\Users\OWNER9~1\AppData\Local\Temp\arduino_build_399408/blink_sos.ino.hex:
avrdude: load data flash data from input file C:\Users\OWNER9~1\AppData\Local\Temp\arduino_build_399408/blink_sos.ino.hex:
avrdude: input file C:\Users\OWNER9~1\AppData\Local\Temp\arduino_build_399408/blink_sos.ino.hex contains 1052 bytes
avrdude: reading on-chip flash data:

An error occurred while uploading the sketch
Reading | ################################################## | 100% 0.15s

avrdude: verifying ...
avrdude: verification error, first mismatch at byte 0x0000
0xff != 0x0c
avrdude: verification error; content mismatch

avrdude done. Thank you.

It seems there was a problem with the MCU chip. I remembered I bought a couple of spares some years ago, so I changed it. And problem solved! It may be that the 'faulty' chip doesn't have a bootloader. How come? Because I suspect I bought a spoofed Uno instead of a Genuino. While it appears identical to the other (real) Genuino on first glance, I noticed that the Made in Italy' printed on the PCB has been replaced by 'Design in Italy', a phease which means what exactly??

Sorry about not using code tags BTW.

'Design in Italy', a phease which means what exactly??

It means that it was designed by somebody in Italy...exactly. (I can't help myself, sorry.:slight_smile: )

This is genuine:

They use unique color of PCB for some last years and quality of printing is noticeably better in contrast with clones.

the 'faulty' chip doesn't have a bootloader

It is normal raw chip. Upload the bootloader and you can use it. Tutorial "how to do it is" here on the web e.g. with your UNO.