Non funziona l'upload su arduino mega2560

Compilato ...

Sketch uses 25,090 bytes (9%) of program storage space. Maximum is 253,952 bytes.
Global variables use 1,620 bytes (19%) of dynamic memory, leaving 6,572 bytes for local variables. Maximum is 8,192 bytes.
/Applications/Arduino/Arduino 1.6.9 Portable.app/Contents/Java/hardware/tools/avr/bin/avrdude -C/Applications/Arduino/Arduino 1.6.9 Portable.app/Contents/Java/hardware/tools/avr/etc/avrdude.conf -v -patmega2560 -cwiring -P/dev/cu.usbmodem1A12151 -b115200 -D -Uflash:w:/var/folders/td/xjbgg2n97rl9wsy40_rsj90h0000gn/T/build912ecd5cfa0effc7c0c72ca8a9e9d89b.tmp/Time_BOMB_Airsoft_GAME_BAckup3.ino.hex:i

... e caricato :

avrdude: AVR device initialized and ready to accept instructions

Reading | ################################################## | 100% 0.01s

avrdude: Device signature = 0x1e9801 (probably m2560)
avrdude: reading input file "/var/folders/td/xjbgg2n97rl9wsy40_rsj90h0000gn/T/build912ecd5cfa0effc7c0c72ca8a9e9d89b.tmp/Time_BOMB_Airsoft_GAME_BAckup3.ino.hex"
avrdude: writing flash (25090 bytes):

Writing | ################################################## | 100% 4.06s

avrdude: 25090 bytes of flash written
avrdude: verifying flash memory against /var/folders/td/xjbgg2n97rl9wsy40_rsj90h0000gn/T/build912ecd5cfa0effc7c0c72ca8a9e9d89b.tmp/Time_BOMB_Airsoft_GAME_BAckup3.ino.hex:
avrdude: load data flash data from input file /var/folders/td/xjbgg2n97rl9wsy40_rsj90h0000gn/T/build912ecd5cfa0effc7c0c72ca8a9e9d89b.tmp/Time_BOMB_Airsoft_GAME_BAckup3.ino.hex:
avrdude: input file /var/folders/td/xjbgg2n97rl9wsy40_rsj90h0000gn/T/build912ecd5cfa0effc7c0c72ca8a9e9d89b.tmp/Time_BOMB_Airsoft_GAME_BAckup3.ino.hex contains 25090 bytes
avrdude: reading on-chip flash data:

Reading | ################################################## | 100% 3.23s

avrdude: verifying ...
avrdude: 25090 bytes of flash verified

avrdude done.  Thank you.

Direi che è un problema del ... tuo clone cinese !

Guglielmo