En détaillant les infos lors du televersement, j'obtiens ces informations :
avrdude: Version 6.3, compiled on Jun 22 2016 at 16:05:21
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 : COM4
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% 0.01s
avrdude: Device signature = 0x1e9801 (probably m2560)
avrdude: reading input file "C:\Users\PROGRA~1\AppData\Local\Temp\buildbc80295ee3e572c2342f5056c5b8d303.tmp/sketch_aug09b.ino.hex"
avrdude: writing flash (656 bytes):
Writing | ################################################## | 100% 0.13s
avrdude: 656 bytes of flash written
avrdude: verifying flash memory against C:\Users\PROGRA~1\AppData\Local\Temp\buildbc80295ee3e572c2342f5056c5b8d303.tmp/sketch_aug09b.ino.hex:
avrdude: load data flash data from input file C:\Users\PROGRA~1\AppData\Local\Temp\buildbc80295ee3e572c2342f5056c5b8d303.tmp/sketch_aug09b.ino.hex:
avrdude: input file C:\Users\PROGRA~1\AppData\Local\Temp\buildbc80295ee3e572c2342f5056c5b8d303.tmp/sketch_aug09b.ino.hex contains 656 bytes
avrdude: reading on-chip flash data:
Reading | ################################################## | 100% 0.10s
avrdude: verifying ...
avrdude: 656 bytes of flash verified
avrdude done. Thank you.