I have this problem flashing new firmware:
Flash Normal or Test firmware (N: Normal/T: Test)?n
Stato del dispositivo COM6:
---------------------------
Baud: 1200
Parità: None
Bit di dati: 8
Bit di stop: 1
Timeout: OFF
XON/XOFF: OFF
Sincronizzazione CTS: OFF
Sincronizzazione DSR: OFF
Sensibilità DSR: OFF
Circuito DTR: OFF
Circuito RTS: ON
In attesa da 0 secondi. Per uscire, premere CTRL+C...
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 "avrdude.conf"
Using Port : COM4
Using Programmer : avr109
Overriding Baud Rate : 57600
avrdude: ser_open(): can't open device "\\.\COM4": Impossibile trovare il file specificato.
avrdude done. Thank you.
with 1.75 flasher renaming file hex:
Flash Normal or Test firmware (N: Normal/T: Test)?n
Stato del dispositivo COM6:
---------------------------
Baud: 1200
Parità: None
Bit di dati: 8
Bit di stop: 1
Timeout: OFF
XON/XOFF: OFF
Sincronizzazione CTS: OFF
Sincronizzazione DSR: OFF
Sensibilità DSR: OFF
Circuito DTR: OFF
Circuito RTS: ON
In attesa da 0 secondi. Per uscire, premere CTRL+C...
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 "avrdude.conf"
Using Port : COM4
Using Programmer : avr109
Overriding Baud Rate : 57600
AVR Part : ATmega32U4
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 20 4 0 no 1024 4 0 9000 9000 0x00 0x00
flash 65 6 128 0 yes 32768 128 256 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 : butterfly
Description : Atmel AppNote AVR109 Boot Loader
Connecting to programmer: .
Found programmer: Id = "CATERIN"; type = S
Software Version = 1.0; No Hardware Version given.
Programmer supports auto addr increment.
Programmer supports buffered memory access with buffersize=128 bytes.
Programmer supports the following devices:
Device code: 0x44
avrdude: devcode selected: 0x44
avrdude: ser_drain(): read error: Operazione di I/O terminata a causa dell'uscita dal thread oppure della richiesta di un'applicazione.
avrdude: AVR device initialized and ready to accept instructions
Reading | | 0% 0.00savrdude: ser_send(): write error: sorry no info avail
avrdude: ser_recv(): read error: Il dispositivo non riconosce il comando.
avrdude: butterfly_recv(): programmer is not responding
Reading | ################################################## | 100% 0.18s
avrdude: Device signature = 0xffffff (probably .avr8x_mega) (retrying)
Reading | | 0% 0.00savrdude: ser_send(): write error: sorry no info avail
avrdude: ser_recv(): read error: Il dispositivo non riconosce il comando.
avrdude: butterfly_recv(): programmer is not responding
Reading | ################################################## | 100% 0.10s
avrdude: Device signature = 0xffffff (probably .avr8x_mega) (retrying)
Reading | | 0% 0.00savrdude: ser_send(): write error: sorry no info avail
avrdude: ser_recv(): read error: Il dispositivo non riconosce il comando.
avrdude: butterfly_recv(): programmer is not responding
Reading | ################################################## | 100% 1.14s
avrdude: Device signature = 0xffffff (probably .avr8x_mega)
avrdude: Yikes! Invalid device signature.
Double check connections and try again, or use -F to override
this check.
avrdude: ser_send(): write error: sorry no info avail
avrdude: ser_recv(): read error: Il dispositivo non riconosce il comando.
avrdude: butterfly_recv(): programmer is not responding
avrdude: error: programmer did not respond to command: leave prog mode
avrdude: ser_send(): write error: sorry no info avail
avrdude: ser_recv(): read error: Il dispositivo non riconosce il comando.
avrdude: butterfly_recv(): programmer is not responding
avrdude: error: programmer did not respond to command: exit bootloader
avrdude done. Thank you.
Helpmeeeeee please...